person 1: hey, what did you get for question 4b?  person 2: i don't know, i just used blake's law
"a rule designed by and for clueless students which states "when unsure how to proceed in a physics question, multiply all given numbers together and hope for the best
"person 1: hey, what did you get for question 4b?  person 2: i don't know, i just used blake's law" What is the definition of "blake's law"?