[mkmensinger]

These kinds of illusion fascinate me. Magicians make use of our brain’s tendencies to fool us all the time. Cool!

[Sine_Pari]

I too love these brain teasers. Try these:

https://www.buzzfeed.com/katienotopoulos/22-optical-illusion-gifs-that-will-make-you-feel-high?utm_term=.dyOkjjnmJ#.euxgQQyxG

http://illusionoftheyear.com/

Regards.

[Sine_Pari]

Kokichi Sugihara is a master at these. Here is my favorite of his:

https://www.youtube.com/watch?v=oWfFco7K9v8

Regards.