When we first meet someone, we perceive only a few details about them: perhaps their appearance, a few words they utter, the context in which we meet them. Yet our impression of them is much deeper. As George Simmel wrote in his influential 1908 article How is Society Possible? we do not see merely the few details we have actually observed, but "just as we compensate for a blind spot in our field of vision so that we are no longer aware of it, so a fragmentary structure is transformed... into the completeness of an individuality."