Is it a good idea to change one's style of play when facing stronger opponents? If so, what would be the better approach:
Play very solidly / dull (e.g. Exchange French / Caro-Kann as White), simplify, try to take the potential out of the position, hoping that the stronger player will not be content with a draw and will take too much risk and lose after pushing too hard for an advantage. If he does not fall for this, happily take the draw against a stronger opponent.
Complicate the game, play sidelines, set the board on fire and hope that the opponent oversees something in the total chaos caused by you, allowing you to get the advantage.
Would this depend on the opponent (e.g. Style 1 against aggressive players and style 2 against positional players)? How to play when facing weaker opponents?
Or is it best to play as one would usually play, disregarding the rating difference?