"Mark," a protrait by Chuck Close, who also has face-blindness. No wonder he's spent the majority of his career painting faces.

I’ve mentioned before that I have a fair degree of face-blindness, a neurological condition that makes it difficult to recognize faces out of context, even if I know a person well. If I don’t see someone regularly or haven’t seen them in a while, it’s particularly difficult to decipher identity. Neurologist Oliver Sacks, who has face-blindness, wrote about the condition recently in the New Yorker. In addition to that article, the publication’s website has a free podcast in which Sacks discusses the condition further. Listen here.