Wednesday, 5 January 2011

World's Oldest Optical Illusion Found?


Prehistoric artists were creating mind-bending double images, according to a paper presented at an international convention on rock art research. Scientists have surveyed the Paleolithic art of several caves in France and discovered a recurring theme that can't be simply accidental.

Throughout the cave of Font-de-Gaume, and in examples from other sites as well, drawings and engravings of woolly mammoths and bison often share certain lines or other features, creating overlapping images that can be read first as one animal, then the other. Rarely, if ever, do they do the same with other animals.

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