If proximity were to govern 
correspondence in all cases, 
however, in the three-spot 
example we would have to 
predict that the spot at position 
2 of the first flashed array 
would appear to move left to the 
A position in the second flash, 
because the spot at A is closer 
to 2 than any other spot in the 
second flash. Similarly, spot 3 
at Time 1 would appear to move 
to the B position at Time 2. The 
spot at 1 at Time 1 and the spot 
at C at Time 2 have no 
corresponding spots, and 
should not appear to move 
anyplace. A sensory theory, or 
any other theory based only on 
stimulus proximity, is "blind" 
to the content of each stimulus 
unit and its role in the whole 
configuration. But an 
inference theory suggests a 
very different conclusion. If 
the stimuli consist only of 
three spots presented at Time 1 
and then at Time 2, the most 
plausible inference is that the 
first array of spots moved as a 
whole to the position occupied 
by the second array. Thus, we 
would predict that the spots at 
1, 2, and 3 presented at Time 1 
would appear to move to the 
respective positions of A, B, and 
C at Time 2.  That is, the array 
would move to the right, and 
the individual spots would not 
move to the left, as would be 
predicted solely by proximity. 
In general, we preceive this 
kind of sequence in just this 
way.