In the comics and films, Clark Kent wore reading glasses while Superman had no glasses but sported a lock of hair on his forehead - and no one figured it out. Ridiculous, it was later said.
Perhaps it was ridiculous if keen reporters who knew Kent well did not figure it out, but for the most part even subtle disguises work well for most people, according to
a new study. Something as minor as complexion changes or a hairstyle are enough to convince people that in a world of six billion people, a one in a million chance of seeing a person who looks like someone you know is not that bad.