By Lauren Goralsky
“You look familiar. How do I know you?”
Walking down the street, attending class, or going to the grocery store, people often ask themselves this question. At times, it may seem that each face is a part of a homogeneous sea. Humans generally share the same basic facial features and expressions across cultures. Yet, our brains have the impressive capacity to distinguish between and identify approximately 5000 faces. So, how exactly are we able to do this?