The reason Nepo lost today is because he was caught by a
Zwischenzug by Carlsen. Nepo took pawn at b7 with his white bishop, but instead of immediately attacking that piece and forcing its retreat, Carlsen surprised Nepo by attacking his c-file pawn with his rook instead, which he had no defense for without losing at least a pawn.
Sometimes in chess it pays to not be completely logical with your move order by not always going after the superior piece. That's why Kirk would beat Spock at chess with non-linear/non-orderly thinking. It's also how they defeated Khan in space.