- Your brain is an association machine.
It connects things together.
- [Narrator] Why are
memories so unreliable?
- About 50% of the details of
that memory change in a year
even though most people are
convinced they're 100% right.
- [Narrator] For thousands of years,
humans have seen dreams
as some kind of window
into our deeper selves.
- The brain in REM sleep
looks uniquely different
from any other time.
- [Narrator] We keep inventing
new reasons to be anxious.
- Anxiety's the most
common mental illness.
- [Narrator] Why do so
many of us feel this way
and what can we do about it?
- Noticing the mind is lost
is a moment of awakening.
- [Narrator] How can a brief encounter
with a psychedelic drug
have such dramatic and varied effects
and what does that tell us about the mind?
(soft music)
