The camera analogy is of
equally little help in
explaining other puzzles of
perception. The eyes are in
constant motion. If we scan the
image of the vase, many
separate images of it are formed
on our retinas, yet we still
perceive it as a unified whole.
How do we integrate these
successive retinal images?
Obviously, a camera cannot
unify the successive pictures it
takes. In fact, a camera cannot
give even a single picture
coherence. None of the
different segments of line of
the emblem on the vase belongs
a priori with another segment
or with the background. How,
then, do we come to perceive
each part of the figure of the
emblem as "belonging" to its
other parts and not to the
background? Such organization
can only be achieved by a
perceiving organism. With no
one looking at a picture, with
no brain behind a retinal
image, there is no such
separate entity as an emblem
within the picture or image.