“All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.” Arthur Schopenhauer

Well that makes the 3rd one that works, two independent implementations.

Now for someone to haul one into space, and try it. To bad the space shuttles are all mothballed in musuems. Maybe the Space-X boys are up for the challenge 🙂