Look, this "expl"... no, game mechanic is very very very well known. This topic is stupid.
Just a quick thing to mention:
there are gates in East Ronfaure [S] that are up against the side of a hill. As a player I can run around then entire gate, but the mob can only run around the bottom part(relative to the hill). Therefore, if you stand at a certain point and move left and right the mob will have to go all the way back around, then you just step aside and they turn around and run back around. I can farm Ts with a magic or ranged or high delay job while rarely if ever getting hit by the mob.
This is called Pinning. It's useless for exp... It's only use is to try and loose agro or to hold a mob and wait for re-enforcements.... or DOT kill lmao. If you say you can cast while a mob is pinned, I'd like a video. When you stop 22~'(MAX casting distance for DMGspell) or less from a mob, it will catch you and hit you if you plan to cast any big spell or shoot it. "Hit for hit" on any T mob will rip your !@#$%^&* face off. It's much better exp/hr to plow through DC/EP solo. As a mage there are goblin pets to supplement you for lvls 17~72. As a ranger there are worms and other mobs..
If you think 2000exp/hr off your 10 min fights with T mobs while running around in circles is good exp... well you should go right back to WoW.
If you claim it's more "fun" to do it this way... well I don't know what to say. To run in circles for 10 minutes per mob and crappy exp... or fast 8~12k/hr goblin pets... You tell me which is more fun.
And.. P.S. If you don't care so much, then stop posting about how you're so much better. Insulting people wont get you very far here.