Well also that the machine could study his style of play, whereas he was playing a stranger; one whose style changed during each game thanks to humans hand altering the logic. Not really fair. At least, different to how humans play chess.

To be fair, Lee Sedol was also changing style during the game. The opening for game 4 is heavily based on the one for game 2, except when he made a mistake.

Do you have a link toward this interview?

Wait, in the interview he says the opposite: "That move had no impact on me whatsoever. Move on."

Thank you very much.