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The gift of being able to describe a face accurately is a rare one, as every experienced police officer knows to his cost. As the Lancet put it recently: When we try to describe faces precisely words fail us, and we resort to identikit procedures. Yet, according to one authority on the subject, we can each probably recognise more than 1,000 faces, the majority of which differ in fine details. This, when one comes to think of it, is a tremendous feat, though, curiously enough, relatively little attention has been devoted to the fundamental problems of how and why we acquire this gift for recognizing and remembering faces. Is it an inborn property of our brains, or an acquired one? As so often happens, the experts tend to differ. Thus, some argue that it is inborn, and that there are special characteristics about the brains ability to distinguish faces. In support of this these they note how much better we are at recognizing a face after a single encounter than we are, for example, in recognizing an individual horse. On the other hand, there are those, and they are probably in the majority, who claim that the gift is an acquired one. The arguments in favour of this latter view, it must be confessed, are impressive. It is a habit that is acquired soon after birth. Watch, for instance, how a quite young baby recognises his member by sight. Granted that his other senses helpthe sound other voice, his sense of smell, the distinctive way she handles him. But of all these, sight is predominant. Formed at the very beginning of life, the ability to recognize faces quickly becomes an established habit, and one that is, essential for daily living, if not necessarily for survival. How essential and valuable it is we probably do not appreciate until we encounter people who have been deprived of the faculty. | 
