Daily Archives: October 7, 2009

Optical illusion

I found a link to this paper dragon that seems to follow you if you move a couple of days ago and downloaded the PDF (the dragon in the PDF file is blue instead of green, by the way). I just printed, cut and assembled it – and it works! You have to close one eye to really make the illusion work, but once you’ve convinced your brain that the head moves, it really looks like it does!