Thursday, May 04, 2017

Smarter than an octopus? Maybe not.

Recent dicussion on a Usenet group about a picture of octopuses "researching" a human diver prompted a search. Cephalopods are smart. See So You Think You're Smarter Than a Cephalopod? from the Smithsonian website.


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Visual and other illusions

   Visual illusions vary. Some can be controlled. For example, I find that once I’ve seen both images in a dual-image illusion, I can see ei...