The Evil we can do.

"The worse thing that happens to guards in a prison is they get bored. And the guards, especially on the night shift -- and this is true, both at Stanford (and we can talk later about Abu Ghraib), the worst abuses happen in both on the night shift."

An interesting interview between ABC's Natasha Mitchell and Stanford University's Professor Emeritus Philip Zimbardo, the man behind one of history's most notorious psychological experiments.

To read the transcript of the interview go here.