› added 5 years ago

86

TIL about Muchu Chhish, a mountain in Pakistan that is so remote and difficult that even if there are no restrictions to climb it, no one has ever reached its summit

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6EkoY TIL of Research during 1950s all-male combat aircraft assignments revealed that a woman's voice was more likely to gain the attention of young men in distracting situations. Joan Elms voice was used for the automated voice warnings for Convair B-58 and was named "Sexy Sally" by the pilots.
XPJR TIL all knots reduce the strength of the rope in which they are tied, generally by 20% to 40% of the unknotted strength.
E1a9P TIL that in 1963 researchers irradiated the testicles of over 100 prisoners in Washington and Oregon. When the inmates were released and had children, some had birth defects but the exact number is unknown because there was no adequate follow-up study.
R5ola TIL that the term "use case" originated in software engineering and was popularized by Ivar Jacobson, a Swedish computer scientist, in the 1980s. The first known published use of the term "use case" was in Jacobson's 1992 book "Object-Oriented Software Engineering: A Use Case Driven Approach.”
v1yej TIL When hummingbirds reach puberty, the males’ beaks grow longer and sharper. They use them to stab other males in the throat to secure mating spots.