Here’s a video which is a simple test of predictability. Please explain to me how this works…
Yeah that’s clever.
The system has parity. Basically if you think of the arrangement of squares as a chessboard – and it doesn’t matter that it is 3x3 or some other size, every move will move you from a white to a black or from a black to a white. Therefore he is able to eliminate squares that you cannot be on.
After that it is a bit like herding sheep – narrowing down the available spaces to move into. Eventually you have such limited choice that he knows exactly where you are.
(bolding mine) However, if you imagine the 3x3 chessboard as drawn on a torus—identifying opposite sides—then black/white parity isn’t changed when you move, say, from A1 to C1 (left one square), or from A1 to A3 (down one square). I don’t remember the video specifically prohibiting a toroidal interpretation of the “adjacent square” movements, so it seems that might be one way to escape the “predictability” trap.
A 4x4 chessboard drawn on a torus, though, will enforce parity change for every adjacent move (even with a toroidal interpretation of the board), so maybe a follow-up video will address this loophole.
To the OP: It is nothing to do with your brain. He is forcing your choices. He makes sure that the section he removes each time is one you could not have reached at the end of the number of moves he just gave you.