Or Roger Penrose. Don't know if he's still publishing but he's 90 now and he had papers published in 2011, which must count him as old. The author also seems t

Or Roger Penrose. Don't know if he's still publishing but he's 90 now and he had papers published in 2011, which must count him as old. The author also seems to forget recently departed physics genius Steven Hawking, still working until his death at 76 afaik.