If a guy tells me the probability of failure is 1 in 10E5, I know he's full of crap.
Richard P. Feynmann, "What Do You Care What Other People Think?"
For a complex task, agreed. For a simple task, a failure rate of 10E-5 can happen. How often do people trying to eat put their forks in their eyes rather than in their mouths? And, to consider mechanical processes... If the cpu I'm running this browser on failed every 10E5 instructions, it would fail 10E4 times a second. It doesn't.
It looks like, this month, I get to be the one to start the quotes thread.