> In both Challenger and Columbia, nobody bothered to analyze the problem because they didn't think there was a problem.
False on both counts. Both the SRB joint design issue and the foam shedding were known, researched and dismissed very early in the shuttle program. They suspected it after STS-1 and confirmed it within a few flights.
No. They were noted, the fact that they didn't destroy the vehicle was taken as evidence they wouldn't destroy the vehicle. Neither received any real scrutiny.
False on both counts. Both the SRB joint design issue and the foam shedding were known, researched and dismissed very early in the shuttle program. They suspected it after STS-1 and confirmed it within a few flights.