Imagine recognizing a total stranger you passed on the street months, or even years, after you first saw them. Does such a person really exist?
Imagine not being able to recognize faces. You could see faces, but you’d be entirely unable to distinguish one face from another. All faces would look more or less the same, with an amorphous assemblage of eyes, ears, noses, lips, and chins. To put it mildly, that would be strange. Learn more on this Moment of Science.