Over the weekend I sliced my thumb. It wasn't just a paper cut, but a deep slice causing a massive downpour of blood. However, I didn't think it was enough to actually see a doctor so I treated it as I treat any wound. I just ran my thumb under cold water, slapped on a band-aid and put an ice pack on it for a while.
My wife asked if I should go to the hospital, but I assured her it was fine. That got me thinking - at what point should you go to a hospital?