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Remarks on non controllability of the heat equation with memory
ESAIM: Control, Optimisation and Calculus of Variations, Tome 19 (2013) no. 1, pp. 288-300.

In this paper we deal with the null controllability problem for the heat equation with a memory term by means of boundary controls. For each positive final time T and when the control is acting on the whole boundary, we prove that there exists a set of initial conditions such that the null controllability property fails.

DOI : https://doi.org/10.1051/cocv/2012013
Classification : 93B
Mots clés : controllability, heat equation with memory
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Guerrero, Sergio; Imanuvilov, Oleg Yurievich. Remarks on non controllability of the heat equation with memory. ESAIM: Control, Optimisation and Calculus of Variations, Tome 19 (2013) no. 1, pp. 288-300. doi : 10.1051/cocv/2012013. http://www.numdam.org/articles/10.1051/cocv/2012013/

[1] A.V. Fursikov and O.Yu. Imanuvilov, Controllability of Evolution Equations, Seoul National University, Korea Lect. Notes. 34 (1996). | MR 1406566 | Zbl 0862.49004

[2] O.Yu. Imanuvilov, Controllability of parabolic equations (Russian) Mat. Sb. 186 (1995) 109-132; translation in Sb. Math. 186 (1995) 879-900. | MR 1349016 | Zbl 0845.35040

[3] S. Ivanov and L. Pandolfi, Heat equation with memory : Lack of controllability to rest. J. Math. Anal. Appl. 355 (2009) 1-11. | MR 2514446 | Zbl 1160.93008

[4] G. Lebeau and L. Robbiano, Contrôle exact de l'équation de la chaleur (French). [Exact control of the heat equation]. Commun. Partial Differ. Equ. 20 (1995) 335-356. | MR 1312710 | Zbl 0819.35071

[5] J.-L. Lions, Exact controllability, stabilizability and perturbations for distributed systems. SIAM Rev. 30 (1988) 1-68. | MR 931277 | Zbl 0644.49028

[6] J.-L. Lions and E. Magenes, Non-homogeneous boundary value problems and applications I, Translated from the French by P. Kenneth, edited by Springer-Verlag, New York, Heidelberg. Die Grundlehren der Mathematischen Wissenschaften. 181 (1972). | MR 350177 | Zbl 0223.35039

[7] D.L. Russell, Controllability and stabilizability theory for linear partial differential equations. Recent progress and open questions. SIAM Rev. 20 (1978) 639-739. | MR 508380 | Zbl 0397.93001

[8] R. Temam, Navier-Stokes equations, Theory and numerical analysis, edited by North Holland Publishing Co., Amsterdam, New York, Oxford Studies in Math. Appl. 2 (1977). | MR 609732 | Zbl 0383.35057

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# American Institute of Mathematical Sciences

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May  2020, 16(3): 1135-1148. doi: 10.3934/jimo.2018196

## Performance evaluation and analysis of a discrete queue system with multiple working vacations and non-preemptive priority

 School of Science, Yanshan University, Qinhuangdao 066004, China

*Corresponding author

Received  October 2017 Revised  April 2018 Published  December 2018

In this paper, we introduce a discrete time Geo/Geo/1 queue system with non-preemptive priority and multiple working vacations. We assume that there are two types of customers in this queue system named "Customers of type-Ⅰ" and "Customers of type-Ⅱ". Customer of type-Ⅱ has a higher priority with non-preemption than Customer of type-Ⅰ. By building a discrete time four-dimensional Markov Chain which includes the numbers of customers with different priorities in the system, the state of the server and the service state, we obtain the state transition probability matrix. Using a birth-and-death chain and matrix-geometric method, we deduce the average queue length, the average waiting time of the two types of customers, and the average busy period of the system. Then, we provide some numerical results to evaluate the effect of the parameters on the system performance. Finally, we develop some benefit functions to analyse both the personal and social benefit, and obtain some optimization results within a certain range.

Citation: Zhanyou Ma, Wenbo Wang, Linmin Hu. Performance evaluation and analysis of a discrete queue system with multiple working vacations and non-preemptive priority. Journal of Industrial & Management Optimization, 2020, 16 (3) : 1135-1148. doi: 10.3934/jimo.2018196
##### References:

show all references

##### References:
Schematic illustration for the service process of the non-preemptive priority queue
Schematic diagram for the model description
Relation of $E(L_1)$ with $\lambda$ and $\alpha$
Relation of $E(L_2)$ with $\lambda$ and $\alpha$
Relation of $E(L)$ with $\theta$ and $\mu_1$
Relation of $E(B)$ with $\mu _1$ and $\mu_2$
Relation of $B_1$ with $\lambda$ and $\alpha$
Relation of $B_2$ with $\lambda$ and $\alpha$
Relation of $D$ with $\mu _1$ and $\alpha$
Relation of $D$ with $\lambda$ and $\alpha$
Relation of $E(W_1)$ with $\mu _1$ and $\mu _2$
 $\mu _2$ $\mu _1 =0.30$ $\mu _1 =0.32$ $\mu _1 =0.34$ $\mu _1 =0.36$ $\mu _1 =0.38$ $\mu _1 =0.40$ 0.45 4.7081 2.9925 2.1313 1.6271 1.3023 1.0787 0.50 2.5403 1.7894 1.3538 1.0748 0.8836 0.7459 0.55 1.7483 1.2914 1.0067 0.8156 0.6800 0.5797
 $\mu _2$ $\mu _1 =0.30$ $\mu _1 =0.32$ $\mu _1 =0.34$ $\mu _1 =0.36$ $\mu _1 =0.38$ $\mu _1 =0.40$ 0.45 4.7081 2.9925 2.1313 1.6271 1.3023 1.0787 0.50 2.5403 1.7894 1.3538 1.0748 0.8836 0.7459 0.55 1.7483 1.2914 1.0067 0.8156 0.6800 0.5797
Relation of $E(W_2)$ with $\mu _1$ and $\mu _2$
 $\mu _2$ $\mu _1 =0.30$ $\mu _1 =0.32$ $\mu _1 =0.34$ $\mu _1 =0.36$ $\mu _1 =0.38$ $\mu _1 =0.40$ 0.45 3.6164 2.9022 2.3961 2.0311 1.7626 1.5610 0.50 2.4961 1.9948 1.6473 1.4001 1.2199 1.0853 0.55 1.8492 1.4802 1.2263 1.0464 0.9154 0.8175
 $\mu _2$ $\mu _1 =0.30$ $\mu _1 =0.32$ $\mu _1 =0.34$ $\mu _1 =0.36$ $\mu _1 =0.38$ $\mu _1 =0.40$ 0.45 3.6164 2.9022 2.3961 2.0311 1.7626 1.5610 0.50 2.4961 1.9948 1.6473 1.4001 1.2199 1.0853 0.55 1.8492 1.4802 1.2263 1.0464 0.9154 0.8175
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2018 Impact Factor: 1.025

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Thread: Riemann Curvature Tensor View Single Post
 P: 1,431 (i) show that $R_{abcd}+R_{cdab}$ (ii) In n dimensions the Riemann tensor has $n^4$ components. However, on account of the symmetries $R_{abc}^d=-R_{bac}^d$ $R_{[abc]}^d=0$ $R_{abcd}+-R_{abdc}$ not all of these components are independent. Show that the number of independent components is $\frac{n^2(n^2-1)}{12}$ not really sure how to go about this. i think (i) follows from the 3 properties above but i cant prove it. also i dont understand what $R_{[abc]}^d$ means, in particular the [abc] part. is this a Lie bracket? (i havent covered these yet) so could someone explain what this is about. thanks.


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# The Lonely Runner Conjecture

The eminent mathematician Carl Friedrich Gauss once said, “Mathematics is the queen of the sciences.”   Considering this statement to be true, it is easy to see the span of her kingdom.  From the design of airplane wings to the ever increasing speed of computation, the royal seal of mathematics is a permanent hallmark of industry and science.    Her practitioners, both pure and applied, have pushed the boundaries of current thought into the realm of new abstractions.

Sometimes these new areas are recreational in nature.  In 1967, the mathematician Jörg M. Wills proposed a conjecture that fully embodies such novelty.  The problem was later named by Luis Goddyn in 1998 as The Lonely Runner Conjecture.  The formal statement of the conjecture is the following:

The Lonely Runner Conjecture (1967): Suppose $k$ runners having distinct constant speeds start at a common point and run laps on a circular track with circumference 1.  Then, for any given runner, there is a point in time at which each runner is a distance of at least $1/k$ along the track away from every other runner.

In pursuit of a counterexample or general proof, mathematicians have also explored specific values of $k$.  As of 2008, the conjecture has been proved for every value of $k$ up to 7.   Interesting enough, the problem can be reformulated to the following question: Can the conjecture be proved for $k > 7$?  Reformulations of this character are particularly useful to researchers as they look for new perspectives and angles leading to an ultimate proof.

However, a final proof could remain mummified in the tomb of abstract mathematics for centuries.   Mathematicians normally employ one of three methods of proof in their tomb raiding; mathematical induction, direct deduction, or contradiction.    Of the three, it seems that mathematical induction or contradiction are the methods that will likely yield success for this particular problem.

Mathematical induction is a method that seeks to establish a statement true for the integers by evaluating a base step for a variable, say $n$, and then proceeding to show the statement is true for $n + 1$ in the inductive step.   The method of contradiction assumes a particular statement is true or false and proceeds to show a contradiction to the premise.    For The Lonely Runner Conjecture one could imagine how these two methods are used.

In the case of mathematical induction, one could possibly construct an algebraic reformulation of the conjecture that depends on the value of $k$, the number of runners.  With this, the base step of $k = 7$ runners could be used and is already shown to be true.   Assuming that the statement would be true for $k$, the hard part would be to show it true for $k + 1$.  Alternatively, one could use contradiction by assuming a counterexample exists for some $k$ as a premise, and then show this premise contradicts fundamental logic.

These are just sketches of how one could approach a proof.    The conjecture has escaped all attempts for more than 46 years.  How would you try to prove it?  Would you use induction or contradiction?

It is not clear what will yield a final or partial answer.    The solution could emerge from the tomb this year or remain shrouded for centuries.  However, from the current state of industry and technology to a lonely runner sprinting on a track, the kingdom of mathematics is alive and well.


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Time discretization¶

class rtctools.optimization.collocated_integrated_optimization_problem.CollocatedIntegratedOptimizationProblem

Discretizes your model using a mixed collocation/integration scheme.

Collocation means that the discretized model equations are included as constraints between state variables in the optimization problem.

Note

To ensure that your optimization problem only has globally optimal solutions, any model equations that are collocated must be linear. By default, all model equations are collocated, and linearity of the model equations is verified. Working with non-linear models is possible, but discouraged.

Variables: check_collocation_linearity – If True, check whether collocation constraints are linear. Default is True.
integrated_states

A list of states that are integrated rather than collocated.

Warning

This is an experimental feature.

integrator_options(self)

Configures the implicit function used for time step integration.

Returns: A dictionary of CasADi ImplicitFunction options. See the CasADi documentation for details.
interpolation_method(self, variable=None)

Interpolation method for variable.

Parameters: variable – Variable name. Interpolation method for the given variable.
theta

RTC-Tools discretizes differential equations of the form

$\dot{x} = f(x, u)$

using the $$\theta$$-method

$x_{i+1} = x_i + \Delta t \left[\theta f(x_{i+1}, u_{i+1}) + (1 - \theta) f(x_i, u_i)\right]$

The default is $$\theta = 1$$, resulting in the implicit or backward Euler method. Note that in this case, the control input at the initial time step is not used.

Set $$\theta = 0$$ to use the explicit or forward Euler method. Note that in this case, the control input at the final time step is not used.

Warning

This is an experimental feature for $$0 < \theta < 1$$.

times(self, variable=None)

List of time stamps for variable.

Parameters: variable – Variable name. A list of time stamps for the given variable.


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Regular version of the site

## The parameter space of cubic laminations with a fixed critical leaf

Blokh A., Oversteegen L., Ptacek R., Vladlen Timorin.
Thurston parameterized quadratic invariant laminations with a non-invariant lamination, the quotient of which yields a combinatorial model for the Mandelbrot set. As a step toward generalizing this construction to cubic polynomials, we consider slices of the family of cubic invariant laminations defined by a fixed critical leaf with non-periodic endpoints. We parameterize each slice by a lamination just as in the quadratic case, relying on the techniques of smart criticality previously developed by the authors.


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# Open Resource Textbooks At Texas A&M Will Save Students Millions, Provost’s Office Says – Texas A&M Today

“What if top-quality books, notes and other educational resources were made available – for free – by the professors who teach university courses? Texas A&M University has embraced that idea as a novel, high-quality way to reduce the cost barriers to college, said officials in the Office of the Provost and Executive Vice President.

# OER at Scale: The Academic and Economic Outcomes of Achieving the Dream’s OER Degree Initiative | Achieving the Dream

The research and evaluation of ATD’s OER Degree Initiative provided encouraging evidence regarding the academic outcomes of students who enrolled in multiple OER courses, the economic impacts for both students and institutions, and the experiences of key stakeholders. Students benefitted from unrestricted access to course content and improved course experiences, in addition to saving money that could be used towards other educational or personal expenses. Overall, the OER Degree Initiative offers an important demonstration of the opportunity, the task, and the challenges of a systemic approach to OER.

# OER at Scale: The Academic and Economic Outcomes of Achieving the Dream’s OER Degree Initiative | Achieving the Dream

The research and evaluation of ATD’s OER Degree Initiative provided encouraging evidence regarding the academic outcomes of students who enrolled in multiple OER courses, the economic impacts for both students and institutions, and the experiences of key stakeholders. Students benefitted from unrestricted access to course content and improved course experiences, in addition to saving money that could be used towards other educational or personal expenses. Overall, the OER Degree Initiative offers an important demonstration of the opportunity, the task, and the challenges of a systemic approach to OER.

# Freeing the Textbook: Educational Resources in U.S. Higher Education, 2018

Key findings from the report include: • Faculty awareness of OER has increased every year, with 46 percent of faculty now aware of open educational resources, up from 34 percent three years ago. • For the first time, more faculty express a preference for digital material over print in the classroom. 61 percent of all faculty, 71 percent of those teaching large enrollment introductory courses, and 73 percent of department chairpersons, “Strongly Agree” or “Agree” that “the cost of course materials is a serious problem for my students.” • Department chairpersons overwhelmingly believe that making textbooks less expensive for students would be the most important improvement to course materials. • Less than one-in-five faculty members are aware of any departmental-, institution-, or system-level initiative to deal with the cost of course materials. • Faculty are acting independently to control costs by supporting used textbooks and rental programs, placing copies on reserve, and selecting materials based on cost. • Overall faculty satisfaction with required textbooks is high, with over 80 percent either “Extremely Satisfied” or “Moderately Satisfied.” That said, faculty express considerable resentment about price, unnecessary frequent updates, and other issues with commercial textbooks. • Faculty often make changes to their textbooks, presenting material in a different order (70 percent), skipping sections (68 percent), replacing content with their own (45 percent), replacing with content from others (41 percent), correcting errors (21 percent), or revising textbook material (20 percent)….”

# Freeing the Textbook: Educational Resources in U.S. Higher Education, 2018

Key findings from the report include: • Faculty awareness of OER has increased every year, with 46 percent of faculty now aware of open educational resources, up from 34 percent three years ago. • For the first time, more faculty express a preference for digital material over print in the classroom. 61 percent of all faculty, 71 percent of those teaching large enrollment introductory courses, and 73 percent of department chairpersons, “Strongly Agree” or “Agree” that “the cost of course materials is a serious problem for my students.” • Department chairpersons overwhelmingly believe that making textbooks less expensive for students would be the most important improvement to course materials. • Less than one-in-five faculty members are aware of any departmental-, institution-, or system-level initiative to deal with the cost of course materials. • Faculty are acting independently to control costs by supporting used textbooks and rental programs, placing copies on reserve, and selecting materials based on cost. • Overall faculty satisfaction with required textbooks is high, with over 80 percent either “Extremely Satisfied” or “Moderately Satisfied.” That said, faculty express considerable resentment about price, unnecessary frequent updates, and other issues with commercial textbooks. • Faculty often make changes to their textbooks, presenting material in a different order (70 percent), skipping sections (68 percent), replacing content with their own (45 percent), replacing with content from others (41 percent), correcting errors (21 percent), or revising textbook material (20 percent)….”


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I ask this question again in a simpler, shorter form.

Maxwell's equations can be derived with Special relativity starting from the Coulomb's law. Therefore all the phenomena of classical electrodynamics can, in principle, be explained by relativistic considerations.

A simple example of the kind of explanation I am looking for: Why does the electric field of a moving particle look like the field of a stationary particle but ''flattened'' in the direction of velocity? Answer: Because by special relativity the field lines of the stationary charge can be imagined to experience a Lorentz contraction when view from a moving frame.

Now, a more challenging question is to explain radiation with relativistic arguments. This has partly been answered in multiple topics here (see this , or this one), at least in the case of instantaneous impulse and acceleration, accompanied by some pretty pictures. However, these post fail to explain, in relativistic terms, why the field lines behave in such a peculiar way at the radiation front. I think "Hey guys, the boss is moving, readjust" could be elaborated further. ''Hey guys, the boss is accelerating, how the hell should we readjust?''

What exactly happens when the charged particle accelerates, and, after acceleration, why the radiation front behaves in such a peculiar manner, continuing to distort more and more the further it propagates. Here is a nice applet for studying the phenomenon: Field of a moving particle. And here is a snapshot from that applet where the particle has been moving, has decelerated, and is now stationary: . Note the weird shape of the field lines in the region where the news ''boss is moving'' is received.

I'm looking for a heuristic explanation by Special Relativity. There has to be one, since the Maxwell's equations can be derived by Special relativity and Coulomb's law. If it make's things easier, change the particle to an infinite charged wall. It will radiate in a more simple manner.

This is the best I can do, but I must resort to General relativity: Say a charged wall starts to accelerate parallel to itself. It will ''think it is in a gravitational field'', and thus will see the field lines curve, since gravity is bending of spacetime. As soon as it stops accelerating it must see the field lines going straight again. But the news about interval of acceleration will continue to ripple further in space, as a warp in space time. Something wrong with this argument? Can you come up with better?

• > "Maxwell's equations can be derived with Special relativity starting from the Coulomb's law." This is misleading. The laws of electromagnetism are much more general than special relativity and electrostatics can imply, they are inferred generalized from experience. You cannot derive validity of the Gauss law for general electric field just from special relativity and Coulomb's law. – Ján Lalinský Apr 30 '17 at 14:31
• , this user is not active since 2015, I just want to stress : when looking at the consequences of a physics theoretical model, one has to understand that "laws" are distillates of observations and are axioms , necessary to choose from the general solutions of wave equations those that describe data and are predictive of new data. The law of induction , which the OP in a comment wants explained, cannot be explained it is a chosen axiom for the mathematical model used in deriving maxwell's equations. en.wikipedia.org/wiki/… – anna v Jul 8 '18 at 6:04
• Special relativity is already a part of EM! Einstein merely (!) transported that symmetry into classical mechanics. – Mozibur Ullah Jul 8 '18 at 6:18
• – Frobenius Sep 14 '18 at 21:06
• Why does the electric field of a moving particle look like the field of a stationary particle but ''flattened'' in the direction of velocity? Answer: Because by special relativity the field lines of the stationary charge can be imagined to experience a Lorentz contraction when view from a moving frame. I don't think this argument really works. Lorentz contraction holds for a physical object, and is expressed in comparison to the object's rest frame. An electric field is not a physical object, and it doesn't necessarily have a rest frame, although there may be a frame where $B=0$. – Ben Crowell Nov 21 '18 at 1:58

However, these post fail to explain, in relativistic terms, why the field lines behave in such a peculiar way at the radiation front.

This is just Gauss's law. Gauss's law says that field lines only begin and end on charges. Since there are no charges at the radiation front, the field lines can't begin or end there; they have to connect up.

Let's study this animation

Let's say everything there happens in a large pool of water.

Let's especially look at the area left to the charge, where field lines move apart from each other. Water molecules are oriented in a certain way, and as the field strength decreases the molecules turn in a certain way, which means the charges of the molecules accelerate in a certain way.

When one plus charge accelerates to the west, nearby plus charges tend to accelerate to the east. That is the phenomenon called induction, or at least the basic idea is that.

Why is there a twist on a field line? There are accelerating charges near that area where the twist is. Those accelerating charges induce an electric field in that area.

If we are interested about the mechanism of the induction phenomenon, that can also be seen in the animation.

So now I hope we have explained everything that is happening in the animation, which includes radiation, as there was a charge that accelerated.

• link of animation missing – anna v Dec 6 '15 at 15:00
• @user7072 Thank you. But... induction is part of the phenomenon what I am asking to explain here. It also depends on understanding what happens when charges accelerate. Second, water molecules will turn the way they do BECAUSE the accelerated particle produces a certain electric field. I am therefore afraid this answer is circular. But, thank you anyway! – AnssiM Dec 7 '15 at 7:49
• Maybe ask question: "how is induction explained by relativity". I might answer. The answer might be: "an accelerating field line points into such direction that there is an induction effect". OK, that's not a good answer, as I don't know how induction follows from relativity. – stuffu Dec 7 '15 at 15:24
• @stuffu induction is an observational law, an axiom for electrodynamics – anna v Jul 8 '18 at 6:12


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# First Jupyter Notebook Post

### This is a blog post created in Jupyter notebook.¶

The goal is to see how well this feature works. I'd like to be able to post Python code to my blog. Happily, Nikola supports that seamlessly.

Normally Nikola preserves the width of each notebook cell. It makes sense that it does this but that doesn't work so well with this template because of the navigation bar on the left side of the screen. That's OK, I can override it by changing the notebook styling with this if I need to:

#notebook-container {
width: 800px;
}

And here is some Python code:

In [1]:
def square(x):
return x**2

for i in range(10):
print(square(i))

0
1
4
9
16
25
36
49
64
81

And a plot:

In [2]:
%matplotlib inline
import matplotlib

import pandas as pd
import pandas.util.testing as pd_testing

In [3]:
df = pd_testing.makeTimeDataFrame(20)
df.index = pd.date_range(start=pd.Timestamp.now().floor('D'), periods=df.shape[0])

df.plot(figsize=(10, 5))

Out[3]:
<matplotlib.axes._subplots.AxesSubplot at 0x7f57609a2fd0>

Magnificent!

# Networked Media Final Project

My Networked Media class has come to a close. I enjoyed it very much am am grateful for the experience. Shawn van Every is a great professor who who taught us a lot about building websites with node.js and express.

My final project is currently hosted on Digital Ocean and uses a new subdomain I created, apps.ixora.io. I intend to use this domain to permanently host this project and other projects I create in the future.

My final project is a continuation of my midterm project. I achieved my goals of building an easy to use interface for qualitatively exploring the drawings. You can find it here: http://apps.ixora.io/drawings. The source code is available on github.

I put a lot of work into organizing the code in a way that scaled and matched the best practices of node developers. There are still some issues in that area and I will continue to improve it so my next project will have less frustrations. I am also going to work on the front-end to learn more about css and user interface design.

There's still more to learn about these pictures. The most exciting thing about it is that there are so many more hidden gems to discover in this dataset. I'd like to use data science techniques to explore the similarities and differences between countries. Allison Parrish told me about some work done by other researchers on this dataset that I will learn from and build off of. They seem to involve tensorflow which I've been wanting to learn about anyway. I have time to devote to this between now and the fall semester.

And finally, my favorite drawing. I may use this as my Facebook profile picture.

# Connected but Alone, Program or Be Programmed, We are all Cyborgs Now

## Connected, but Alone

Sherry Turkle is a science and technology professor at MIT who studies the psychology of human relationships with technology. She gave a TED talk in 1996 about how the Internet would teach us about ourselves and help us to live better lives in the real world. In 2012 she gave another TED talk, also about the Internet, but argued that it is changing our lives in ways that we don’t want.

Turkle says that our phones are changing who we are. Behaviors that would have been considered crazy 20 years ago are now commonplace. For example, texting during meetings or conversations. We end up alone when we are with other people. When we are with other people we are also connected to multiple other places.

The sum of many little communications does not add up to one real conversation. Our technologies give us a illusion of friendship and companionship without the burden of actual friendship. We need to learn to be comfortable being alone, [technologically] disconnected from other people. Only when we are alone will we be in touch with ourselves and be able to form real connections with others.

# Breitbart, Web We Lost, Harassment, Sluts and Network Cards

## Study: Breitbart-led right-wing media ecosystem altered broader media agenda

After the 2016 election the Columbia Journalism Review published a study of social media sharing patterns for Facebook and Twitter. They wanted to understand how different media outlets informed or misinformed voters on the right and left. Instead of finding people to be in self-reinforcing “filter bubbles” or “echo chambers” that reinforce what people already believe, they found that there were asymmetries in how users on left and right were embracing technology. There was a new right-wing media ecosystem that was much more insular and detached from traditional media sources. On the left there were partisan sites but there were stronger connections to mainstream media.

Going forward journalists need to think about how to build (or rebuild) a basis for the public to form a shared belief about what is happening. A common set of facts is a necessary precursor for civil society to have a constructive debate about public policy issues.

# The Long Tail, Free Labor, Network Neutrality, Here Comes Everybody

## Free Labor: Producing Culture for the Digital Economy

Tiziana Terranova is an Italian theorist and activist who writes about the Internet and New Media. In her essay Free Labor: Producing Culture for the Digital Economy, she writes about the free labor taking place that is critical to the continued functioning of the Internet.

Terranova states that free labor from Internet users is the source of economic value in the digital economy. Free labor is defined as labor that is provided voluntarily, with no remuneration by the beneficiaries. An example of this is the time and effort people put into producing content for YouTube or writing short (or long) messages for Facebook. Internet users seek out these websites specifically to consume the digital content produced by other Internet users. These companies are producing the digital content framework that feeds off of the content and do not produce the actual content themselves.

Free labor and collective knowledge are being voluntarily contributed to capitalist business practices. This essay highlights the essential nature of that free labor to the functioning of the Internet but also refers to it as a “modern sweatshop” or “social factory.”

# Beyond the Mirror World, Surveillance and Capture

## Beyond the Mirror World & Surveillance and Capture

Philip Agre is a former professor of information studies at UCLA. He wrote extensively about modern technology and privacy. His work Beyond the Mirror World presents a discussion of data collection and society’s privacy concerns.

Agre defines the mirror world as the world of data. Data is collected from the real world and stored in a database designed by a software engineer. The database contains a representation of the real world, storing characteristics determined by the designer. He points out that the distinction between data objects and the real-life things they represent is being blurred.

This mirror world constructed in a computer can be explored, possibly without the consent of the human beings associated with the being data collected. New strategies for protecting privacy must be developed. Keeping personally identifying information out of databases is critical. Pseudoidentifiers can be used instead, allowing businesses to function and privacy to be protected.

# Societies of Control and The Enduring Ephemeral

## Societies of Control

Gilles Deleuze was a french philosopher who was friends with Michel Foucault, the philosopher who wrote about discipline and punishment in society. Deleuze expanded on Foucault’s work by describing a control society, a means of control that is the successor to a discipline society.

Foucault’s discipline society was based on physical enclosures such as prisons or schools, or the idealized Panopticon, with people being constantly monitored. In Deleuze’s control society, technology has allowed control to evolve from physical enclosures to one that provides a complex network of human interaction that is constantly monitored. People are free to interact with each other, but only by using the tools the network provides.

An example here is Facebook. We are free to use Facebook as we with but it is actually limited to the provided functionality and thoroughly monitored and analyzed. We cannot re-engineer Facebook as we wish and it is very hard or difficult to leave completely. Another example is our smartphones. We are always connected to the Internet and have access to massive amounts of information, but with a cost. Our phones are constantly collecting data based on our actions. The freedom is less free.

It is difficult or impossible to remove oneself from these mechanisms of control. It is not like removing oneself from a prison, where once a person leaves the prison the mechanism of control is no longer effective.

# Panopticism

Michel Foucault grew up as a self-described “juvenile delinquent” with a “bully” for a father who would sternly punish him. The frenchman grew up to be a philosopher and theorist who studied power and social control. In his work, Discipline and Punish: The Birth of the Prison, he wrote about organizations that allow a small number of people to exert control over a large group.

The chapters starts with a description of plague quarantine rules in the 17th century. Families were confined to their homes and were rigorously monitored from the street by a single “syndic” who was in turn monitored by a “intendant” assigned to manage a quarter of the town. There were strict rules governing behavior with thorough monitoring and infractions punishable by death. The goal was to correct the abnormal (unhealthy) people and make them normal again.

This “perfectly governed” society is compared to a theoretical prison called a Panopticon. This cylindrical prison is built with all cells facing the center with a single prison warden in the middle monitoring everything about every prisoner. The prisoners are not able to communicate with each other or determine if the warden is monitoring them at any particular moment. The architecture of the building has the power over the prisoners incorporated its design.

# Declaration of the Independence of Cyberspace

A Declaration of the Independence of Cyberspace was written by John Perry Barlow, a “Cyberlibertarian” and a founding member of the Electronic Frontier Foundation. He wrote this essay while at a party World Economic Forum in Davos in response to the Communications Decency Act of 1996. He was outraged that this law was passed and saw it as a threat to the sovereignty of the Internet from foreign powers.

The Communications Decency Act made it a crime for anyone to share “indecent material” to anyone under the age of 18. It was struck down a year later in a Supreme Court case Reno v. American Civil Liberties Union on the grounds that that law was unnecessarily broad and suppressed the speech of adults.

The Declaration rejects government of the Internet by any “outside force.” He argues that there is no consent of the governed to apply laws and that the Internet is developing its own governing forces. Internal problems will be solved by using a “Social Contract.” He cites government ignorance of Internet culture. Barrow claims that the Internet exists outside any country’s borders, outside “physical space.”

There are clear parallels with the United States’ Declaration of Independence. America was originally a colony of Great Britain, and the Internet was originally created by DARPA (USA). America and the Internet both grew apart from their creators and rejected their governance. Barrow clearly had this in mind when he wrote:

These increasingly hostile and colonial measures place us in the same position as those previous lovers of freedom and self-determination who had to reject the authorities of distant, uninformed powers.

Barrow does acknowledge government control over “our bodies” but he rejects control over “our minds.” No government has the authority to govern in cyberspace.

# "The Medium is the Message," by Marshall McCluhan

Marshall McCluhan begins his 1964 book Understanding Media: The Extensions of Man with the paradoxical statement that “the medium is the message.” He argues that the specific content being communicated is less important than the medium through which people communicate.

He cites as an example, a simple light bulb. The light bulb is a medium without a message, but is overlooked as a communication medium because it “has no ‘content.’” If many light bulbs spell out a word, the word is the ‘content’ and becomes the focus of our attention. The light bulbs are the medium, even though the light bulbs haven’t changed.

This still seems paradoxical and unsatisfying. It is helpful to consider what he means when he uses the term “medium” and “message.”

He defines a “message” as “the change of scale or pace or pattern that it introduces into human affairs”. The message isn’t a set of facts or banal statements, it is an impact on human behavior and interaction.


text:
## Thomas' Calculus 13th Edition

Elliptical cone along the $x$-axis as depicted in $\bf{graph (g)}$.
We have the graph for an Elliptical cone along the x-axis as depicted in $\bf{graph (g)}$.


text:
Centralizer of Subset is Intersection of Centralizers of Elements

Theorem

Let $\left({G, \circ}\right)$ be a group.

Let $S \subseteq G$.

Let $C_G \left({S}\right)$ be the centralizer of $S$ in $G$.

Then:

$\displaystyle C_G \left({S}\right) = \bigcap_{x \mathop \in S} C_G \left({x}\right)$

where $C_G \left({x}\right)$ is the centralizer of $x$ in $G$.

Proof

By definition of the centralizer of $S$ in $G$:

$C_G \left({S}\right) = \left\{{g \in G: \forall s \in S: x \circ s = s \circ x}\right\}$


text:
# Any Words on Isha Yoga?

Discussion in 'Eastern Philosophy' started by Eman Resu, Feb 1, 2003.

Messages:
248
There was a seminar at work last week with the Sadhguru Vaggi something-or-another on Isha Yoga. It's $250 for a 3-hour-a-say, 7-day off-site with him to - in my words - expand your awareness. Any thoughts on Isha Yoga (such as "what is it - really")? Do we have another thread that touches on the subject? Thx 2. ### Google AdSenseGuest Advertisement to hide all adverts. 3. ### ftstgrgRegistered Member Messages: 1 Just happened to stumble on this forum and thought I'd share some thoughts on the above subject. Sadhguru Jaggi Vasudev started Isha Yoga, until recently called Sahaja Sthithi Yoga. I have not found anything on the web, or through speaking to followers that are negative about his practice. My thoughts, after going through their various programs are the following: 1) The initial program - Isha Yoga - is pretty decent. You are taught certain sound and breath pranayams and a form of meditation. 2) You are introduced to 'live' foods and their benefits. Vegetarianism. 3) It is promoted as a non-religious, 'scientific' and open path. 4) You sign a statement that you will not disclose contents of any of their programs to anyone else. 5) You are not allowed to take any notes, record etc., 6) It is entirely run by volunteers. I found the following to be somewhat disturbing in retrospect: 1) Like the example of the frog placed in a waterpan slowly raising the temperature and being cooked, one is slowly drawn more and more into it. 2) You realize that it is not totally scientific, non-religious and open. You should be 'willing' and 'surrender'. 3) You are drawn into more and more deeper practices changing every aspect of your belief system. 4) Eventually you get to see scenes that might have repelled you during the initial days, but you have been conditioned not to question them. You are told not to 'seek' any experiences, triggering you to actively seek these experiences. 5) Volunteerism takes on a new meaning, volunteering for the movement, and to increase enrollment. The above are just my observations. They do not hound you for money, and they have quite a large membership whereever they start the program. 4. ### Google AdSenseGuest Advertisement to hide all adverts. 5. ### spidergoatVenued Serial MembershipValued Senior Member Messages: 53,149 God man=Con man 6. ### Google AdSenseGuest Advertisement to hide all adverts. 7. ### Eman ResuRegistered Senior Member Messages: 248 Thanks. Spider's reply is where I was leaning. I like the idea of learning to meditate and think that all that is "good" in the world is not to be had for profit. If it is all good then when you share it it's benefits can be realized and the "word" can be spread. 8. ### amritdevRegistered Member Messages: 2 Isha Yoga Must Be Stoped Sadhguru Is A Wolf In Sheeps Clothing, I Am A New Teacher Of Kundalini Yoga, But I Am Also A Warrior From Past And In Present, My Guides Had Drawn Me To See What This Isha Yoga Was All About, There Group Did Not Screen Me And Were Very Sloppy Trying To Gain More Energy From Free Willed Souls. I Took The One Week Class And Had Developed Hemroids From The Begining, But Like A Bad Relationship I Continued To See If There Was Anything That Could Benefit Me. The Day Before I Started The Class A Tarot Reading Was Done On Me And Verbatim Was Read From The Cards Where The Teacher Said You Must Forget About Everything You Have Learned Or Experienced. I Wanted To Quit On The Fifth Day After I Failed To Bow To Sadhguru's Picture After The Initiation That He Attempts To Get Followers Through Hypnosis, But Another Student**who Came To Me Because She Also Practiced Kundalini Asked Me To Stay To Keep Her Company Since She Was From Out Of Town, So I Finished It With Her For Her Protection. Two Days Later I Called Them And Told Them I Know What They Are All About And That I Would Let Everyone Know That They Are A Cult And To Send My Money Back Or Take The Karma. The Next Morning I Had Awakened With A Third Of My Gold Chain With A Crystal On It Tightened Up With One Of The Links Inserted Into A Soldered Hoop On The Clasp. I Showed It To A Woman I Know Who Does Readings And She Said Some One Tried To Choke You, Do You Know Any Black Whitches? I Then Told Her What Happened To Me And My Friend Who Did The Tarot Reading Also Confirmed It Is The Teacher Of The Isha Yoga Who Is A Black Whitch. The Next Day My New Friend From Out Of State Who*i Was Trying To Protect Called Me To Tell Me That*a Friend Of Hers Who Is With The*group Called Her To Say The Teacher*said To Tell*me*that*the Man You Are Friends With Is A Criminal And Not To Listen To Him, I Said To Her Now You Know Who Your Friends Are And She Said She Would Never Do Anything With Her Again. My New Friend Also Told Me She Has Been Feeling Sick Since She Was Doing The Kriya, I Said You Are Still Doing It? Dont Do It Again And You Will Feel Better, The Next Day She Called Me To Say She Felt Better But Everything Else Was Going Wrong, I Told Her To Be Strong And Ask For Help At The Ashram But I Did Not Tell Her What Happened To Me The Night Before Because I Did Not Want Her To Be Scared. The Morning Of This Day I Felt A Sore On My Tongue And Spit Some Blood From My Throat* So I Looked At My Tongue In The Mirror And Saw It Was Slit At The Tip Like A Snake So Later I Went To My Friend Who Does Readings And She Told Me These People Want To Murder You And For Me To Seal Every Drain And Opening In My House Because They Can Get In Like Roaches. It Lookes Like I Am In A Spiritual War And Need All The Help I Can Get. Sadhguru Is Sucking People In Every Day Thriving On People Looking For Help And Then Making Them Feel They Belong To Something, He Is Getting There Energy Through There Free Will, What Is He Doing With All This Energy? Amritdev Singh P.s After Going Through All This I Went Onto Google And Entered Isha Yoga Cult And It Brought Me To A Site Called “the Hub” With Someone Asking About Isha Yoga. It Was Answered By “bks Iyengar” There Is No Special Type Of Yoga Callled “isha Yoga”, It Is Just A Cult 9. ### hiteshrphRegistered Member Messages: 1 Isha Yoga I was Just browsing for some information on ISHA institute when i came across this thread and felt sharing a few thoughts of mine since I have been practicing ISHA Yoga for few years now. I don't want to comment on amritdev reply because not familiar with tarot card reading and the scientific validity of everything being said. However, I would like to comment on ftstgrg response. 1) Like the example of the frog placed in a waterpan slowly raising the temperature and being cooked, one is slowly drawn more and more into it. There is an absolute truth to this, however the way it is put gives a negative spin. The analogy of "frog placed in a waterpan slowly raising the temperature and being cooked" does not fit in this instance because the end result, in my experience, after going through each program was being more joyful and happiness. They teach you how to take care of yourself, how to live your life in happiness and peace. The program works and hence people are slowly drawn more and more into it. 2) You realize that it is not totally scientific, non-religious and open. You should be 'willing' and 'surrender'. Weather it is scientific or non-religious or open is completely subjective because what is science and religion to one person might not be the same for someone else. Here is what i think of science, others have a right to define it their own way. Everything that is happening in this universe is a science. Computer is a science, programming is a science, agriculture is a science, flying is a science, space and water research is a science, every atom is a science (atomic science), motion is a science (physic) etc. etc. Psychology, sociology, human anatomy, opthalmology, cardiology, everything and anything that is happening inside a human being is a science. So if someone is breathing a certain way, or sitting still for long periods of time, or eating healthy food, or creating a loving emotion or doing anything that is related to the body and mind and emotions in a structured way to bring out the best possibility to become a joyous person is a science! Now to understand the idea behind willing and surrender one has to understand that in order for any good to happen one has to be willing and surrender. If a doctor says you need to exercise and you are not willing then it is not going to work. Even if your spouse manages to nag and make you run on a treadmill, it will generate a lot of negative emotion and resistance to the whole process of exercising there by reducing or completely eliminating the benefits. Surrendering has similar implication except that it has much more deeper involvement. 3) You are drawn into more and more deeper practices changing every aspect of your belief system. The whole reason to do ISHA Yoga practices is to bring change. If you have a bad aching body or stressful mind or sad emotions within you then you want to change. Imagine to go from a chronically aching, tired, fatigued body to vibrant full of life and energised body, or from a constantly thinking, worried and stressed mind to a more calmer, peaceful, blissful mind or from a hatred, jealous, sad emotion to a loving and compassionate emotion. This is what everyone wants and it is possible to bring this change by doing these practices. Right now people believe that body means aches and pain, mind means stress, heart means lust. All these beliefs must go one way or the other, by practicing ISHA Yoga it has been very easy for me to bring these changes. 4) Eventually you get to see scenes that might have repelled you during the initial days, but you have been conditioned not to question them. You are told not to 'seek' any experiences, triggering you to actively seek these experiences. If a man starts crying because of pent of emotions for years, or someone starts dancing, or screaming out of being joyful and ecstatic unfortunately is something everyone is very uncomfortable with. Imagine if you came the first day at a yoga program and suddenly everyone starts dancing and singing...it will raise all kind of question and doubts. However, that is exactly what everyone is seeking. Everyone knows that repressing emotions, good or bad, is detrimental and needs to be released. However, our society will not allow it making a person more neurotic. I have been doing my practices for 4 years now and i am happy to say that i laugh and have fun more often then before. When my nieces and nephews come to my house i am running around the house making noises, throwing ball, pillow fights, go outside and have snow fights. I have not done this for a long time now and my elderly parents always complains that I encourage children to act like hooligans. I thought this is absurd because i want to have fun and i want the kids to have fun! I have done quite a few programs and i don't ever recall anyone telling me "not to seek any experience" The whole purpose of all the programs is to allow individual to seek higher level of consciousness and happiness and blissfulness. However, they do tells us not to pay attention to other people's experiences. It made sense to me because i was there for my own joyfulness and not look at others to see what is happening with them. 5) Volunteerism takes on a new meaning, volunteering for the movement, and to increase enrollment. ISYA is a 100% voluntary driven organization. Every single activity to sustain this organization is performed by members voluntarily. To set up any program the volunteers do all the work. I took things for granted initially, but when i volunteered to help for few programs I realized that amount of time, energy, effort, and dedication goes into making these program happen is amazing. It is much easier to get the work done by charging the participants and hiring people, but that does nothing to improve the quality of the program. Volunteering helped me to fulfill my desires to give something back. ISHA Yoga offers individuals the means to reach the peaks of happiness and i think more and more people should be made aware and encouraged because it is not the same as material happiness, (I am not against material happiness), because if i find a way to make more money I don't want other people to know because of competition. But this happiness is coming from within which is much more fulfilling and no competition. I want all my friends and neighbor to be happy in this way because happy people don't go around hurting, shooting, or blowing up people. Anyways, it is much more fun to hang around a happy person then someone who is sad and depressed. Thank You. 10. ### swarmRegistered Senior Member Messages: 4,207 Dude! Paragraph breaks are your friend! Captials only at the front of a sentence and for proper names and a few exceptions like "I." Also you seem to not be zeroing in too well on concensus reality. 11. ### swarmRegistered Senior Member Messages: 4,207 The first question for such things, and usually the easiest way to weed out the worst cults is - if it is 100% volunteer, why charge and who gets the money? Granted$250 for a 7 day retreat is not outrageous. You might also find out about gotchas like room and board.

Open financial statements and the guy at the top not living in opulence are good signs.

Non disclosure agreements and secrecy are not a good sign.

Happiness is fun, but if it comes with dependency or subservience then there are issues.

12. ### kmguruStaff Member

Messages:
11,757
Hard to know since

4) You sign a statement that you will not disclose contents of any of their programs to anyone else.
5) You are not allowed to take any notes, record etc.,

Messages:
16,330
its a concoction at worst or a sub branch of astanga yoga at best ..... if they are charging $250 with the promise of achieving something in 7 days during 21 hours, I would opt for the former. 14. ### gktshivaRegistered Member Messages: 1 Who would pay the cost to conduct the program? Ha ha ha, what a great find that was. And the cult got isolated itself. There is a huge cost involved in conducting any event. It is just a minimal charge when compared to what that is being taught here. Joining and not joining is completely every person's wish. Have fun.. 15. ### cosmictravelerBe kind to yourself always.Valued Senior Member Messages: 33,264 You want self awareness? Then drop a hit or two of good LSD and that can happen to you for a lot less money! Self awareness comes from living life , daily things that happen and things you encounter while traveling through life. You can't become self aware in just 7 days, that's ridiculous and seems like a scam to me. 16. ### s1ngular1Registered Member Messages: 1 In my experience, Sadhguru is most definitely an "enlightened" master. I will never forget sitting in my chair and having Sadhguru's words echoing through my being when I felt the blood of Christ. However, I do understand those who think that it's a scam, or that it's all a waste of time, because the words spoken may give you ideas, but only because of past conditioning. Before Sadhguru proved to me that I don't exist, I would have said the same kind of things, mainly something like, "This is all some crazy bullshit." But Sadhguru isn't giving you anything new that you don't have already.. He's simply trying to help you to see what's obstructing you. All of the ideas that you have about ISHA or the Sadhguru are FALSE. Because they are ideas in the mind. Sadhguru is literally in all aspects and ideas.. GOD. Who else could he be? He is unbound. He is trying to show you that a conflict has come because you think that there are 2 of you. "I" and "myself". It is very clear to any human being with the smallest amount of knowledge that we live in a realm of Duality. Duality means, for instance, if you look in a mirror half of your body physically looks and is almost exactly like the other half. They mirror each other. Something very sickening is happening in the mind of most humans. And this is the same dysfunction that the man called Jesus was speaking about. These great and wise men have the only real message. And it is inside You. Everything that you perceive is within awareness. 17. ### lightgiganticBannedBanned Messages: 16,330 Anything you see reflected in a mirror has a real counterpart (although the surface of the mirror may distort its proportion .... or even render it blank in cases of deep dust) 18. ### babauerRegistered Member Messages: 1 Some misconceptions about Isha Yoga There have been some misconceptions expressed about Isha Yoga. I took the Inner Engineering week-long course 13 months ago. -- I never signed anything. -- The course teaches a 26-minute set of practices (breath, chanting & asanas). It does not promise that anything will happen within a week. It is the practice, done over time that creates change. My classmates included a doctor, a lawyer, software engineers, grandmothers and students. They are not fools, nor am I. -- The class took 28 hours over the week: 3 hours weekday evenings, 8 hours on Saturday, 4 hours on Sunday. That is less than$10/hour. Given the rental cost of the hall, they barely broke even.

--In the past year, I have lost 25 pounds, drink less, worry less, and laugh more.

Check out Isha's humanitarian efforts: free medical clinic for uninsured at their Nashville center, reforestation, rural education, and more. All volunteer.

peace.

"A cynic is one who knows the price of everything and value of nothing."

19. ### gtpraveenkumarRegistered Member

Messages:
2
> cosmictraveler06-08-09, 07:57 AM
> You want self awareness? Then drop a hit or two of good LSD and that can happen to you for a lot less money! Self awareness comes from living life , daily things that happen and things you encounter while traveling through life. You can't become self aware in just 7 days, that's ridiculous and seems like a scam to me.

Nothing can happen in seven days. They just teach some excercise which you have to practise twice a day for forty days and after that once a day for six months. To be frank i was as easy as it sounds. It is just a 30 mins routine but doing it consistently needs lot of discipline.

After that, I dont think you will stop doing it after seeing how much impact it had in your lifestyle

>ftstgrg

> I found the following to be somewhat disturbing in retrospect:

> 1) Like the example of the frog placed in a waterpan slowly raising the temperature and being cooked, one is slowly drawn more and more into it.

They might me drawn to it but they are not becoming monks or gone crazy. If you are getting drawn into something which makes you really happy and peaceful. I dont think it is a bad thing

> 2) You realize that it is not totally scientific, non-religious and open. You should be 'willing' and 'surrender'.

There will some disappointment on that perspective. See Yoga is a vedic science. For any kind of meditation you need to have a Guru and only he can initiate it for you. It is not a tradition but it is a practise the teaching has lot of sanity to it. For the current world people needed everything though courier or online download.

> 3) You are drawn into more and more deeper practices changing every aspect of your belief system.

There are 6.6 billlion people in this world, I think there are more than a million belief system. Which by itself means that belief system is just something which you got into your mind at younger age and it is not sientific or holy
Always remember people who thought you belief system are not scientists or holy scholars. If Jesus or Mohammed come to earth now and see what christians and muslims do, they will surely say I never asked you to do this you misunderstood me. Information gets changed as it move across 10 people. When it move across 1000+ years and billions of people you do the math ... I might agree if you say Isha makes you to belief something which is different from what you believed. but if your new belief system makes you more happy and peaceful then I dont think there is any harm in changing it.
Atlast religion is made to bring peace and happiness to human kind

> 4) Eventually you get to see scenes that might have repelled you during the initial days, but you have been conditioned not to question them. You are told not to 'seek' any experiences, triggering you to actively seek these experiences.

I never did my kriya that level to see any scens so I cant commenton that

> 5) Volunteerism takes on a new meaning, volunteering for the movement, and to increase enrollment.

There are lot of other things that Isha does and all those are done my volunteers only. Isha foundation did a guiness record on planting 1 million years in one day. Most of the things I think it is done in India. As you know India is still a developing nation there is more need here than in any other developed nation

The above are just my observations. They do not hound you for money, and they have quite a large membership whereever they start the program.

20. ### gtpraveenkumarRegistered Member

Messages:
2
> swarm01-15-09, 03:34 AM
> ISYA is a 100% voluntary driven organization.

> The first question for such things, and usually the easiest way to weed out the worst cults is - if it is 100% volunteer, why charge and who gets the money?

The money goes to isha foundation. The foundation is doing lot of social services which in turn needs money. But the money what ever asked for the program, most of it will be spent for the program itself. The guy who gives the hall for rent is not a volunteer

> Granted \$250 for a 7 day retreat is not outrageous. You might also find out about gotchas like room and board.

> Open financial statements and the guy at the top not living in opulence are good signs.

> Non disclosure agreements and secrecy are not a good sign.

The basic need for this is that the the yoga has lot of sanity to it. It should not be thought to others unless you are a guru. We dont have this knd of agreement in India as we understand the spirutual meaning of it since over here we believe lot more worst crap than that. But in US I think signing a NDA would have been a sensible move.

> Happiness is fun, but if it comes with dependency or subservience then there are issues.

If you want to be healthy it is good that you run or walk for 30 mins daily. That do not mean if you dont run or walk you will be sick. Doing Yoga is one of the efficient way to attain peace if you are capable of getting it elsewhere forget yoga.

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:roflmao:

22. ### amritdevRegistered Member

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Sahdguru is about hypnosis, black witch craft and stealing energy from the embodied

Unless you have abilities you would not have a clue you were being violated by this thief, until you learn to use higher consciousness, you are all running around like sheep, you all need to start meditation daily and turn within and realize your thought are not yours, only your actions. Follow no one but your higher self.

23. ### barrynkRegistered Member

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we ll he has done a lot of work for the benefit of ppl..i ve not attended isha but I have been following his videos and speeches lately...
.I for one believe there must be a natural tendency for every human being to discover himself..how come could that be so abstruse if that is what the universe wants from you?
overall i think its good to follow him if your entangled in your own beliefs without reasoning, but am also afraid if one would loose his individuality in the process..