The Real-Life Childhood Injection That Inspired the 'Razor’s Edge' Line in 'Comfortably Numb'

That line from the doctor — “Can’t you see that there is such a thing as a razor’s edge?” — is pure Roger Waters autobiography. He’s said in interviews that as a kid he came down with a serious illness (scarlet fever, possibly rheumatic fever) and was given a shot that knocked him sideways. The moment the needle went in, he felt a sudden,