[kstenerud]

Failure is ALWAYS a great teacher. As long as you're listening, you'll learn far more than you would from success.

[einhverfr]

I think the assumption there is that if we do everything right we will always succeed. I am not sure that is the case. I would say that failure (and success) both give one an opportunity to analyse what was done well and what was done poorly.

Sometimes when you take risks, you will lose.