You're right. History doesn't matter and cannot possibly matter in a perfect game. After all, by using the same strategy for more than few hands the player give

You're right. History doesn't matter and cannot possibly matter in a perfect game. After all, by using the same strategy for more than few hands the player gives information away unnecessarily. So in a perfect game people will switch tactics at any moment, which removes the history element altogether. So the reason why changing tactics every hand is ineffective in the real world is because people believe that the way you played hands before gives information about your play in the future: your table image. But you only work on your table image in the first place so you can exploit it later. When playing against a perfect opponent you won't sacrifice opportunity to maintain an image, because the opponent will always play in the same way (the opponent knows you can change tactics at any moment). However! The perfect strategy is still absolutely useless in a tournament and most other games. Because exploiting weakness and amassing chips is the objective for the first hours, and the perfect model is bad for that. Still, it's all fascinating. Appreciate your explanation.