>>52522266>Once you figure out all possible optionsWhich is a literal impossibility. Just the fact that changing EVs on a Landorus-T by a number of 60 changed the meta forever with how people used that mon just shows how things can be varied. Not everyone is going to be using the exact same mons. There are literally more possible ways to build teams in Pokemon than there are observable atoms in the universe. Are they all viable? No, of course not. But you physically cannot "figure out all possible options" for every single battle without fault. You're going to get EVs wrong, or their plan wrong. It's what makes Pokemon battles interesting.