YOU could have a high IQ if you can spot which dice has seven spots instead of six. The already difficult optical illusion ...
These cubes give the illusion of being a real shape, but there's always at least one line running both in front of and behind another line to reach a corner — something you can design in two ...
Optical illusions, such as the Necker Cube and Rubin's Vase, trick the brain into seeing one interpretation first and then another, as the image is studied. The human brain effectively switches ...