HUMANS, LIKE ALL PRIMATES, are highly visual creatures. Most of the back of our brain is devoted to visual processing, and half of the cortex is involved with sight. In addition, when visual inputs conflict with clues from other senses, vision tends to dominate. This supremacy is why, for example, ventriloquists are so compelling. We see the dummy talking, and we are fooled into hearing the voice coming from it—a case of what scientists call “visual capture.” (With eyes closed, however, we can correctly localize the dummy voice to the ventriloquist.)