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TIL couples can become external regulators for one another, essentially functioning as a mutual bio-feedback system. Their pupils dilate in synchrony, they echo one another's speech patterns, movements, and even cardiac and EEG rhythms.

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v1arB TIL Richard Nixon once called in staff to help him open an allergy-pill bottle. It was the childproof type of bottle, with instructions saying “Press down while turning.” The cap had teeth marks on it where Nixon had apparently tried to gnaw it open
l76Y7 TIL that an elderly Salvador Dali became severely burned as his excessive use of the assistance button next to his bed caused it to short-circuit and set the bed aflame.
KYLjJ TIL that Raytheon (now RTX), military industry giant, started as a company producing appliances. From microwave ovens to missile systems.
QJvdM TIL that there's a genus of sea cucumbers called sea pigs that live on the bottom floor of every ocean and extract nutrients from the mud.
NXgg8 TIL of the Eleusinian Mysteries- secret rituals of ancient Greece that spanned over two millennia. They involved a special drink (kykeon), visions, and conjuring of an afterlife. Discovered in Eleusinian temples were fragments of ergot (a fungus containing psychedelic alkaloids, pre-cursors to LSD).