Scientists admit mistakes?

Scientists admit mistakes--no other profession or calling does that anymore, it seems. Scientists can not only be wrong but can be shown to be wrong very publicly. You examine evidence, you put together a hypothesis that seems the most likely, or least wrong. Then the tests come back and say, "Sorry guys."
New Yorker, July 9 and 16, 2007, p. 79

I had to laugh out loud at this. Or maybe I am just not in science and I just think I am.