If you think that's the only dice NASA rolled with on the Shuttle system, then I have a bridge I'd love to sell you. Did you know it was actually designed to fail 1 out of 100 times? (and it did 2 out of 135, which is pretty damn close) Why not 1 out of 1000, or 1 out of 1 million? Because you can and need to put a price on human life, and because if you don't take some risk, then you'll never launch a thing and go anywhere. Sucks? Sure, but true.
If SU wants to play major college football, it needs to take risks. If not, let's go play FCS. If NASA wants to go to Mars, you bet your ass its going to have to look the other way on some things.
Challenger was 100% avoidable in hindsight. No doubt about it, the warning signs were there. But so were a lot of times that it didn't fail that risk was taken. You just only hear about the failures. Did you know that NASA launched, outside of flight rules, knowing the o-ring issue on multiple previous flights?
But I do love hyperbole.