In November 1960, Science published an article entitled Doomsday: Friday, 13 November, A.D. 2026. At this date human population will approach infinity if it grows as it has grown in the last two millenia (von Foerster et al., 1960).

It’s today![1] The human population of the world is now infinite, and tomorrow it shall be imaginary.[2] Happy Doomsday, everybody!