I always said that if the task at hand was to dig a ditch on the moon, it would serve them better to ask a ditch digger how to do it instead of a book smart person who has no experience in that matter.Experts generally assume that they are smarter than a handyman about everything, but their repairs are appalling. I saw a copy of the Apollo moon buggy, and any racing bike mechanic could have made it a lot lighter. In general, NASA designs vehicles without reference to Earthly experience. Car guys must quit in frustration.