NASA\'s culture was much more to blame for Challenger than anything else. Recall that: [list type=decimal] [li]They knew about o-ring blow by even before STS-1 [/li] [li]Blow by was experienced by multiple missions before Challenger.[/li] [li]If Challenger didn\'t launch on an absurdly cold day (for Florida, at least), the o-rings would have moved to seal the joint, just as they had in other missions.[/li] [li]Had there not been really really strong windshear, the chunk of fuel would have probably stayed in place until burnout, and would not have catastrophically failed.[/li] More then that, though, it was the design. Simply, the Shuttle was ahead of its time. It stretched materials science and astronautical engineering to its limit. And it ended up not delivering on its promises. Shuttle I should have, IMHO, remained a one or two article engineering program, and not have evolved into a 5 orbiter space moving van program. But what do I know? I\'m just a humble, silly man, posting on a forum about computer rockets and spaceships.