When Mike writes5) Please learn some physics because it says you can't do it.the proper response is to engage as to why unless you've already danced around that point. AFAIK you two argued about different things that seemed to have morphed along the bent or straight tube way but here now he has made a definite unequivocal statement.
I'd also hope if Mike's been doing it so long that occasionally, particularly when he's used replies 3, 3(a) or 4, (even perhaps 5 if I'm right about Tony's work) someone has actually come back and surprised him.
It's this fundamental idea of breaking your desire into manageable chunks that seems to escape many.
I have to wonder now where that thread is.