A good way to underpin one's technical knowledge is to be forced to explanation and justification and, in the process, those whose knowledge could be a little shakey may end up with a benefit from the discussion
yes, but not in the case where person doesn't consider facts and vigorously defend his PoV.
Going personal isn't a very good option though, but, honestly, I can see why some of respectable PPRuNers did just that.
Such level of misunderstanding of physics can be insulting by itself, and if a person having that "knowledge" claims to be a person who relies on that knowledge PROFESSIONALLY, than this makes it twice more insulting.
