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TIL Write-only memory is a joke among computer and software engineers. Initially there was no use for a memory circuit from which data could not be retrieved. The first use of the term is generally attributed to Signetics in 1972 and is featured in the Apple IIe Reference Manual.

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OG8o6 TIL Tumbleweed, though iconic in westerns, is not native to North America
xVWQg TIL grasshoppers & locusts are the same species. Grasshoppers are generally solitary & innocuous, but when overcrowded, a chemical releases in their brain which turns them into a locust — ravenous, horny, and attracted to large groups. Oddly enough, that brain chemical is: Serotonin
mxmJp TIL Microsoft has the quietest place on Earth. “You can hear the grind of your bones!”
4kr86 TIL there is a peak in Canada named after American president John F. Kennedy, called Mount Kennedy, in Yukon. It was named in his honour almost a year after his death, in 1964, and was specifically picked out by the Canadian government.
jNv TIL in the Spider-Man: Reign mini-series comic book, Peter Parker killed Mary-Jane by giving her cancer via his radioactive sperm.