I cut the inside of my finger on a piece of smooth metal foil, but felt nothing. The first I realised I had done it was when I started leaving patches of blood on things. The cut was quite deep and took a while to staunch, so why was it completely painless? I’ve had similar cuts on sharp objects before and mostly they’ve been very painful, but every so often some cuts don’t seem to hurt at all.
Don Pemberton, Perpignan, France