Two conflicting views that will never reach a common ground. Can never be a negotiated settlement or winner.
The whole premise of @douglas_schroeder is his claim that human hearing is unreliable. I'm here to prove that is wrong. I'm sure of that.
In a good system, with an experienced audiophile, like many of us here. These systems are very stable. The sound never change aside from warm up time. When we turn up our system, we hear exactly the sound that we've always heard. Regardless if it's Monday or the weekends.
Douglas claims that our hearing perception changes. But where are these "perception" in a stable system? It does not exist. We all know this. Does not need convincing.
How about amplifier warm up time? He claims there's no such thing. Well a lot of us know Tubes and class A sounds much better after 2 hour. One might argue this is just bias affecting the hearing. If that is the case, then why does this bias have little to no effect on class AB, class D, and class H amplifiers.
I can go on and on, as I've stated, I started thinking, and Douglas assessments naturally lead to many illogical conclusions that result in more questions than answers.