I notice that our educational system promotes critical thinking and critical inquiry, but that this can have negative side-effects among intellectuals, professionals and the like.
People focus so much on eviscerating other people's ideas, proposals, and personalities, that they spend insufficient time praising others and their creations/contributions.
There's always going to be drawbacks with any idea or proposal. And no policy will be perfect. And if you spend your time waiting for all the drawbacks and shortcomings to be addressed, then the time for action has often passed-by. It's good to have constructive criticism. And its good to know about the drawbacks and problems. And as much as possible, these should be addressed. But you can never get perfection.
There were countless problems with the US Space Program. We tried to address as much of them as possible. But there came a time when you simply had to take a leap of faith. That cost lives, sometimes. But the alternative was perpetual second-guessing and stagnation. Yes, we shouldn't send astronauts into space if a shuttle fails an inspection. Obviously. But we can't always address every single possibility, either.
I'm also reminded of Eisenhower's analysis of the Normandy Invasions. Montgomery wanted to wait another year, by some accounts. He thought the invasion was too risky. Too much was being left to chance. We had no assurances that Hitler wouldn't throw his tanks at the invaders, immediately. And we knew that if this happened, the invasion's chances for success would be dramatically lowered. Eisenhower did everything he could to make Overlord a success. But there came a time when he simply had to throw the dice and take a leap of faith. I can't begin to imagine Eisenhower's stress levels on the night before the landings.