I beg to differ. I don't disagree with the principle but I'm sure the law of diminishing returns applies here. For example, unless I move on to trimix, I am pretty much diving the max I can/will do. Should I continue to this diving for the rest of my diving life how much new can I learn?
If fact, to a degree, why would I want to - what I do gets me safely back on the boat every time?
I wonder if there is a paid position to play the 'devil's advocate'?
Sorry, I can't see any statement without wanting to try and pick holes in it ..... it's one of my less attractive traits!