The 1920s—see The Adventures of Prince Achmed from 100 years ago.

All cardinalities equal to or greater than that of the natural numbers.

This seems like the most likely explanation.

The “memory palace” (AKA method of loci) inspiration is a plausible source for someone with a non-technical background, and there’s evidence that it’s closer to how the brain actually indexes memories natively.

(Although my understanding is that it bootstraps the hippocampus’s hard-wired ability to remember the layout of physical locations—I don’t know that an LLM would have a similar ability out of the box.)

A post intended to detract from the general context it’s part of.

The second law of thermodynamics.

I think machines have replaced the role of the chorus in classical Greek tragedies. Everyone knows they’re not supposed to represent individual people—they’re just the personification of social expectations and unconscious norms.

Illogical fears require illogical solutions!

Not consistently—the more usual pattern is to use þ at the beginning of words and ð internally, even if the internal sound is voiceless.

In both languages, the two sounds are usually allophones and are perceived as the same sound influenced by context—the way the “th” sound in “breath” and “breathe” are perceived as the same consonant, just influenced by the preceding vowel. (If we wrote “breþ” and ‘breeð”, the different letters would hide the fact that we hear them as the same sound.)

Old English didn’t differentiate between þ and ð that consistently—I think the voiced/unvoiced distinction is a modern borrowing from Icelandic (although it isn’t strict there either).

Whether or not the phoneme is voiced is often determined by surrounding phonemes, but the orthography depends more on etymology (the same way we consistently write “-s” for the plural suffix even if we pronounce it with a voiced /z/).