I really don't know what your point is. And how does the Challenger explosion in any way suggest that there aren't enough engineers? Certainly this one major i

I really don't know what your point is. And how does the Challenger explosion in any way suggest that there aren't enough engineers? Certainly this one major issue had engineers urging for delay, so there doesn't seem to have been a lack of them. You know that all of the shuttles risks are well documented, right? It's a mountain of issues that basically gets the "ok to be ignored for now" stamp at every launch.