No, I'm just telling about the difference in situations and the ability to adapt, instead of blindly following the "standard". Here is an example. Holminster Switch. This is not a difficult dungeon, mobs there are just fat, but in my group there were two first timers: a WHM and SAM. The WHM did well, but panicked. The SAM had problems with rotation. Dancer tried very hard to be effective, but his efforts were clearly not enough. These people were not so bad or lazy. But for many reasons, they could not do everything as a group of experienced players would. Okay, it's really not a problem. I made small pulls to not to stress people, especially WHM, because the damage of the group was very small. An extra five or ten minutes will not change anything.