Humans are unpredictable and display no set patterns. You can expect them to do something but they will not always do it. You could expect them to focus on a certain member but they may instead switch over to someone else. You could expect X behavior and always get Y, Z, B, or D out of them. I often find myself falling asleep during non-hardmode encounters as it moves from phase 1 to phase 2 back to faze 1 again mechanically but there is never a time in PvP where I can remain calm and unexcited to make Ragnarok zeny. Even fighting players you can easily stomp still gets me going because you never know if they are just feigning noobness to hit you with a 1-2 punch.