Local receptive fields

[Steve Hanson]

Indeed!  I agree completely...  
a similar point (perhaps more balanced) was made by Phil Anderson a while back

"The art of model-building is the exclusion of real but irrelevant parts of the
problem, and entails hazards for the builder and the reader.  The builder
may leave out something genuinely relevant; the reader, armed with too
sophisticated an experimental probe or too accurate a computation, may
take literally a schematized model whose main aim is to be a demonstration of
possibility."

-P. W. Anderson (from Nobel acceptance speech, 1977)