On top of this, behaviourists cannot make sense of the fact that incomparable goods are insensitive to small improvements. That is, if \(A\) and \(B\) are two goods that you have no preference between (for example, bets on propositions with imprecise probabilities) and if \(A^+\) is a good slightly better than \(A\), then it might still be incomparable with \(B\). This distinguishes incomparability from indifference, since indifference “ties” will be broken by small improvements. So the claim that there is no behavioural difference between indifference and incomparability is false.