:08:04
and interacts with
this fuzzy mass of stuff...
:08:07
and sure enough, it provokes it
into a particular state of existence.
:08:14
There were philosophers in the past
that said, ''Look, if I kick a rock...
:08:17
''and I hurt my toe, that's real.
:08:19
''I feel that. It feels real.
It's vivid.
:08:21
And that means
that it's reality.''
:08:24
But it's still an experience, and it's still
this person's perception of it being real.
:08:29
Scientific experiments have shown
that if we take a person and, uh...
:08:34
hook their brains up to certain PET scans
or computer technology...
:08:38
and ask them to look at
a certain object...
:08:42
and they watch,
certain areas of the brain light up.
:08:46
And then they've asked them
to close their eyes...
:08:48
and now imagine
that same object.
:08:51
And when they imagine
that same object...
:08:54
it produced the same areas
of the brain to light up...
:08:58
as if they were actually
visually looking at it.
:09:00
So it caused scientists to
back up and ask this question.
:09:03
So who sees then? Does the brain see?
Or do the eyes see?
:09:08
And what is reality? Is reality
what we're seeing with our brain...
:09:13
or is reality what
we're seeing with our eyes?
:09:16
And the truth is is that the brain
does not know the difference...
:09:20
between what it sees in its environment
and what it remembers...
:09:23
because the same specific
neural nets are then firing.
:09:27
So then it asks the question.
What is reality?
:09:37
[ Woman ] We're bombarded
by huge amounts of information...
:09:42
and it's coming into our body,
and we're processing it--
:09:44
coming in through our sense organs,
and it's percolating up and up...
:09:47
- and at each step
we're eliminating information.
- [Jingling ]
:09:51
And finally, what is bubbling up
to consciousness is...
:09:54
the one that's
the most self-serving.
:09:57
[ Man ] The brain processes
400 billion bits of information a second...