A great TED Talk that a friend sent me over the weekend.

“Think back for a moment to elementary school. You’re sitting there in class, and your teacher is handing back quiz papers, and one of them looks like this [displays a spelling test graded with a C-]. This is not mine, by the way. (Laughter) So there you are in grade school,and you know exactly what to think about the kid who got this paper. It’s the dumb kid, the troublemaker, the one who never does his homework. So by the time you are nine years old, you’ve already learned, first of all, that people who get stuff wrong are lazy, irresponsible dimwits — and second of all, that the way to succeed in life is to never make any mistakes . . . according to this, getting something wrong means there’s something wrong with us.“