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Illusion - Is Seeing Really Believing?
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Illusion - Is Seeing Really Believing (1998)(Marshall Media)[Mac-PC].iso
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ILLUSION
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00020_Text_ref01t.txt
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1996-12-31
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Surprisingly, the correctness
of our perceptions is seldom
affected by our knowledge of
the world, at least the kind of
knowledge that can be imparted
by hearing or reading a factual
statement. Illusions, for
instance, do not disappear
merely because we discover
that they are illusions. Even
though we know intellectually
that the moon remains
stationary as we look at it, it
still appears to be moving when
we see it through a thin cloud
passing in front of it or see it
next to a moving cloud. (In
subsequent chapters, I will
document many other
instances of the independence
of perception and factual
knowledge.) To the extent that
our perceptions are
independent of our factual
knowledge about the world,
they should be distinguished
from the domain of knowledge
and thought. Our perceptions
arise through the processing of
sensory information in a
manner largely independent of
other cognitive processes.
If the source of our visual
information about the world is
filtered through a distorted and
highly variable retinal image,
how, then, do we come to
construct the world more or
less veridically? This is the
central question of the science
of visual perception.