The simplest game of "I predicted your prediction" is rock-paper-scissors.
In elementary school, every time I played rock-paper-scissors, I would tell the other person what I was going to throw, and then based on what kind of person they were, I would guess how many steps ahead they would predict.
I said "bun," and you guessed it would be "scissors," I predicted it would be "rock," and you would predict and throw "bun," at which point I should throw "scissors."
This game can go on infinitely in your mind until both people actually make a move.
When good news comes out, should it rise? When bad news comes out, should it fall?
When good news is fully released, does that mean bad news? When bad news is fully released, does that mean good news?
If it were that simple, even elementary school students could play finance.
The world is a large rock-paper-scissors game.