Am I sure? I've done no verification. But while I'm occasionally frustrated with the holder of that account I've seen no particular reason to believe that the

Am I sure? I've done no verification. But while I'm occasionally frustrated with the holder of that account I've seen no particular reason to believe that they are not who they claim to be. I am sure that the account holder claims to be Paul Lutus, as the link is on his profile. 'How is it possible that someone with a "wide background in science" has not heard about conservation of momentum?' It's probably not; but this comment thread (wading through the jibes, snipes, and nonsense) doesn't seem to demonstrate with much clarity that he hasn't.