Observant machines

I was reading about computer vision and face recognition in the New York Times, and I was reminded of a quote from one of my favorite movies, The Princess Bride.

Fezzik (the giant): Why do you wear a mask? Were you burned by acid, or something like that?

Man in Black (Westley): Oh no, it’s just that they’re terribly comfortable. I think everyone will be wearing them in the future.