Hi @stcordova -
I’ve been thinking about your argument that the strong differences between protein domains prove a lack of common ancestry.
Here is a queen + opposite colored bishops endgame I recently played that ended in a draw:
And here is a very, very different position: a double rook endgame in which I was 2 pawns down as black but managed to swindle a master for a draw by (threat of) perpetual check:
The 2 endgames are radically different, and there is no possible way to transpose between them.
In your opinion, does the stark difference and lack of transposibility of the 2 positions prove that they could not have arisen from a common ancestral position?
Thanks,
Chris Falter