Knockout rugby has come a week early for Scotland, so their oldest enemies know they'll have to treat their Pool B finale with the same fervour to avoid a mugging.
England can lose and still progress into the quarter-finals as long as they finish within seven points of their Calcutta Cup rivals, but it is not a comfort zone they have any interest in testing.
"We know we need to win the game. We want to finish top of the group and take through a winning attitude," said fullback Ben Foden.
"No one's ever won a World Cup losing a game, so we know what's ahead of us."
On the evidence at hand , the Scots should pose little threat to England.