sure i seen something like this
on the telly a few days ago. pretty nifty tho
(, Wed 25 Feb 2009, 0:50, Reply)
It was on QI I believe
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Fishcat Difficult difficult lemon difficult., Wed 25 Feb 2009, 0:53,
Reply)
That's the Thatcher Illusion, discovered by Prof. Peter Thompson
I have a photocopy of the original article on my wall- it always fascinated me at undergrad :)
Edit: Here you go:
www-users.york.ac.uk/~pt2/thatcher.pdf
(
Fishcat Difficult difficult lemon difficult., Wed 25 Feb 2009, 0:53,
Reply)