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Gray House
01-20-2011, 04:35 PM
This is the most amazing optical illusion I have encountered: Big Spanish Castle (http://www.johnsadowski.com/big_spanish_castle.html)

Spotbowserfido2
01-20-2011, 06:52 PM
This must be the phenomenon referred to in the song "Spanish Castle Magic" by Jimi Hendrix! :cool:

hypnogeist
01-21-2011, 12:02 AM
A most fascinating example of Pavlovian conditioning. ]:-<