Unexpectedly there’s been a lot of discussion about my Rotating Grid Illusion… It got on the front of the TED blog and since has been exhumed, examined, ripped apart and reassembled by many people from the science community. As with Octocat, it’s great to see people reinterpreting my work, especially since I don’t consider myself remotely scientific (or in the case of octocat - retarded). I’ve updated the original post here.

In light of all this discussion about optical illusions, I present my rarely seen Ident animation, the original short film which I now use as a logo. The effect you see in this is called a bistable percept, an image or shape that can be interpreted in 2 ways at once. In this case, a rabbit and a bird. Other examples of bistable percepts here and here.