Re: Well said, Tom
"Reasonable" and "good engineering" go together. You can't have the latter without the former. "Wishing away the technical difficulties" (as Donna Shirley so rightly observed about the Bob in question) is not a way to get anywhere in the Solar System. Starting an activist organization with lots of ethusiasm is a good thing, but pissing off nearly everyone it comes in contact with is not.
Walt Disney was wrong Wishing will NOT make it so. You _must_ do good engineering when you're shooting for the stars. And that includes societal engineering.