Loss aversion describes people’s tendency to strongly prefer avoiding losses to acquiring gains. More concretely, giving you 5 dollars won’t make you extra happy but if $5 are taken from you, you will get upset. Loss aversion relates with saying “no” to a patch. As a reviewer, giving a clear explanation of the reasons for your rejection helps avoiding a longer discussion on whether the patch should or should not be merged, helping authors see more objectively the value of their contributions. As a contributor, remember that if you were the reviewer or another external party, you would probably be a bit more skeptical than you currently are about the value of your patch.