Tilt-shift photography

It's amazing how a very shallow depth of field can make a real scene look like a model:

http://www.smashingmagazine.com/2008/11/16/beautiful-examples-of-tilt-shift-photography/

I wonder if this is entirely learned behaviour though? If you'd never seen regular macro photography, or indeed *any* photography, would you make the same judgements about the size of the objects? I don't know, just wondering aloud.

(Freudian note: I came very close - so to speak - to posting this with the title 'Tit-shift photography'. An entirely different pursuit.)