Activity

if somebody suggests some system they can’t put into practice, then the system is no good.

Agreed. My point is that you can't refute a flaw by saying the flaw doesn't have a workable system to resolve it. "Your boat has a hole in it". "Yeah, well I don't have any way of fixing it". That doesn't resolve the criticism of the boat. If it's unfixable and a real flaw, you might just need a new boat.