Is it possible to for me to suffer a misfortune or a harm of which I am completely unaware? At first sight the idea seem ridiculous. It's like someone telling you they were suffering a toothache yesterday but were quite unaware of it at the time! If I am harmed surely I must undergo a disagreeable experience of some kind? On the other hand if I lose the chance of promotion in my job due to some malicious gossip put about by a colleague surely I have been harmed as I have been deprived of a benefit I would otherwise have enjoyed. This must be true even if I never know about it.