I am decent at chess but barely know how the pieces in Go move.

Of course, this because I have spent a lot of time TRAINING to play chess and basically none training to play go.

I am good on guitar because I started training young but can't play the flute or piano to save my life.

Most complicated skills have basically no transfer or carry over other than knowing how to train on a new skill.

But the point here is, if i gave you a guitar with a string more or less. Or a different shaped guitar, you could play it.

If i give you a chess set with dwarf themed pieces and different colored squares, you could play immediately.

I don't think thats true. If you'd only ever played Doom, I think you could play, say, counterstrike or half-life and be pretty good at it, and i think Carmack is right that its pretty interesting that this doesn't seem to be the case for ai models