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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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00217_Text_ref07t.txt
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1997-02-04
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Why we have trouble drawing
subtle shapes is not
understood, nor, to my
knowledge, has it been
discussed before. In my view,
the difficulty we have in
rendering subtle shapes can be
traced to the fact that we are
not consciously aware of the
internal processes that
underlie form perception. In
order to copy a figure we first
need to encode an accurate
description of it and then use
that encoding to instruct
ourselves as to how to
reproduce it. If the figure is
simple, we can describe it to
ourselves consciouslyΓÇöΓÇôfor
example, "a rectangle, twice as
long as it is high." But if it is
subtle and complex, such as the
shape of a horse is, we cannot
easily generate an accurate
description of the shape that
we could then use to guide us in
copying it.
We have roughly the same
difficulty in attempting to copy
a completely unfamiliar, novel
shape that is not easily
described, such as the one in
the illustration at left. If this
analysis of the problem is
correct, again we would still
have the problem of
understanding why some
peopleΓÇöΓÇôartists in particularΓÇöΓÇô
manage to overcome the
difficulty. To simply say
"practice" begs the question. It
presupposes that artistic ability
is entirely learned and thus
fails to account for the fact that
some children are good at
artistic representation very
early in their lives.
The argument here is not that
we have difficulty perceiving
shapes, a process that I suggest
in the next chapter is based on
unconscious description.
Rather it is that we have
difficulty extracting or making
such description conscious in
order to guide us in copying
certain shapes whose spatial
relations are subtle.