Any DPSer in WoW going for a world first will have spent time on dummies and other encounters analysing and optimising themselves with a parser. I would mention world of raids but given your disdain for parsers, I can only tremble at your likely opinion of that would be
Recording and replaying footage from attempts is just a different way of achieving the same thing and frankly, the two compliment each other brilliantly. The first thing my FC did when learning new turns was to take the best recording from the group (We would have 2 or 3 people recording/streaming at the very least) and promptly break down that footage into a digestible timeline to give ourselves a better idea of what we were up against.
Ps "Casual-tip a good debate doesn't have to be so hostile."![]()