There can be other conclusions drawn as well.I think we can conclude that @mac64 dives in a very restricting and confined set of parameters that doesn't match basically anyone anywhere. In his world,
A few years ago I went through a very painful process in a thread with mac64. I will spare the details, but it had to do with using basic dive tables to plan multi-level dives. I kept asking the same question in different ways in an attempt to get a straight answer from him, but each of his replies was more evasive than the one before. What he was saying was truly impossible, but he would simply never respond directly to any point I made. I finally gave up.
So another possibility is that there are some people in all walks of life (I am not saying he is one of them) who make a problematic statement and then go to any length to defend it, not caring how far into the land of the absurd that requires.