At the start of H.G. Wells’ 1895 novella The Time Machine, the Time Traveller explains to his friends that “any real body must have extension in four directions: it must have Length, Breadth, Thickness, and — Duration.” This idea, of conceiving time as a fourth dimension, had been broached in the 18th century, but it had first been treated seriously in a mysterious letter to Nature in 1885:

“I [propose] to consider Time as a fourth dimension of our existence. … Since this fourth dimension cannot be introduced into space, as commonly understood, we require a new kind of space for its existence, which we may call time-space.”

The letter writer identified himself only as “S.” Was this Wells? Apparently not: In his 1934 Experiment in Autobiography Wells wrote, “In the universe in which my brain was living in 1879 there was no nonsense about time being space or anything of that sort. There were three dimensions, up and down, fore and aft and right and left, and I never heard of a fourth dimension until 1884 or there-about. Then I thought it was a witticism.”

So someone had anticipated Wells’ idea by a full decade. As far as I know, his identity has never been discovered.

(Via Paul J. Nahin, Holy Sci-Fi!, 2014.)

Say what you will about hell, it’s very well organized. According to the 17th-century grimoire Ars Goetia, the underworld is ruled by 72 demons, each with its own sigil (above) and served by a sort of infernal bureaucracy:

Aim (also Aym or Haborym) is a Great Duke of Hell, very strong, and rules over twenty-six legions of demons. He sets cities, castles and great places on fire, makes men witty in all ways, and gives true answers concerning private matters. He is depicted as a man (handsome to some sources), but with three heads, one of a serpent, the second of a man, and the third of a cat to most authors, although some say of a calf, riding a viper, and carrying in his hand a lit firebrand with which he sets the requested things on fire.

Wikipedia has a page explaining who does what.

Related: Belphegor’s prime, 1000000000000066600000000000001, is a palindromic prime number with 666 at its heart and 13 zeros on either side. It was discovered by Harvey Dubner; Clifford Pickover named it after a prince of hell responsible for helping people make ingenious inventions and discoveries.

The infinite monkey theorem holds that a monkey typing at random for an infinite amount of time will almost certainly produce the works of Shakespeare.

This may be true, but mathematicians Stephen Woodcock and Jay Falletta of the University of Technology Sydney find that it would take an extraordinarily long time — longer, in fact, than the life span of the universe.

Assuming a typing speed of one character per second on a 30-key keyboard, they find, a single chimp has only about a 5 percent chance of typing BANANAS in its own lifetime. And even the entire global population of 200,000 chimps will almost certainly never string together the 884,647 words that make up Shakespeare’s works within 10¹⁰⁰ years.

“There are many orders of magnitude difference between the expected numbers of keys to be randomly pressed before Shakespeare’s works are reproduced and the number of keystrokes until the universe collapses into thermodynamic equilibrium,” the authors conclude. “As such, we reject the conclusions from the Infinite Monkeys Theorem as potentially misleading within our finite universe.”

Speaking of Shakespeare: Grand Theft Hamlet is a British documentary about the staging of a production of Hamlet inside Grand Theft Auto:

Winner of the Jury Award for best documentary feature at the 2024 SXSW Film Festival, it will be released in the U.K. in December and globally early next year.

(Thanks, John.)