I thank my lucky stars I never sailed into the wide blue yonder with a professional skipper who'd only read about navigation; I am just as grateful that my stents were inserted by surgeons who'd been taught in hospitals and had had plenty of actual experience. In the case of the latter, during my first experience, I felt faint and they immediately pumped some nitroglycerine into me. On asking if that wasn't inclined to explode, the surgeon replied that yes, but no, and just as long as I didn't decide to have a cigarette right at that juncture, all would be well. As I'd given up ciggies in '66 we were all safe.
If folks will forgive me saying so, I get the impression that these sorts of very dubious arguments, with positions based on stretched fantasy, only exist today because of the advent of digital. Before that, people tended to respect reality a bit more, but now - who knows which new god becomes flavour of the sect. Seems anything can be argued from any angle, however dumb. The secret of success is never to give up; take the Parthian shot, if you can think of it. And if you can't, take a poke at it anyway, who'll be any the wiser?