One might argue that these 
experiments are not decisive 
with respect to Berkeley’s 
thesis because vision may not 
innately signify particular 
shapes but become dominant 
later on. Thus, after a lifetime 
of associated tactual 
experience, a straight visual 
image might become a strong 
cue to the presence of a straight 
object. The proper experiment 
would either be one with 
infants or one with adults in 
which they would be exposed to 
the sensory conflict long 
enough for a possible process of 
reeducation to occur. Little 
research with infants on this 
problem has been conducted, 
but research on adults does not 
bear out this thesis.