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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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00401_Text_res20t.txt
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1997-02-04
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828b
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29 lines
The Perception of
Environmental Orientation
What determines whether or
not an object looks vertical,
tilted, or horizontal in the
world? One might think that it
has something to do with the
objectΓÇÖs orientation relative to
other objects. For example, a
picture on the wall may look
tilted because it is not aligned
with the wallΓÇÖs vertical and
horizontal coordinates. As we
shall see, this proposition is
true. But it leaves unexplained
how we perceive the
orientation of the coordinates
of the wall. To what can we
compare them? It also leaves
unexplained how we can
perceive the environmental
orientation of a single object
more or less correctly, even
when it is the only object
visible. There must be another
source of information about
orientation available to us.