The Art of Exchanges is one of those under-the-radar ‘super skills’ that all the strong players possess, and the rest doesn’t quite get.
It is perhaps the most important, very underestimated SKILL in chess.
Few players, other than IMs and GMs realize how powerful that skill really is.
Needless to say, over 95% of club players do not put much thought when it comes to exchanging their pieces or pawns. If the exchange looks “fair” or “equal” why not swap a pair of bishops, trade the knight, or few pawns?