These are the concerns that should've been listened to. But that's the benefit of hindsight. Were those the only concerns? If all the concerns were listened t

These are the concerns that should've been listened to. But that's the benefit of hindsight. Were those the only concerns? If all the concerns were listened to, how much that would've affected flight schedules? Would've been Shuttles flying at all? And as a consequence, weren't the Shuttles overly complicated? Much simpler Soyuz is clearly a safer option.