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No surprise: performance enhancers enhance performance. But they might not give me the instant mountain-scaling boost I want.

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KkpE TIL that we say “red heads” instead of a more appropriate “orange heads” because we needed a word to describe redheads before we needed a word for the uncommon color of orange.
KJ8E TIL there’s a series of 70-foot-long concrete arrows that bisects the country longitudinally all the way from SF to NYC, all designed to direct aerial traffic. They are from the pre-digital age and were installed by the Federal government in 1924, coupled with light signals to guide the way.
VBKQ0 TIL Ingrid bergman's affair was so scandalous, it was discussed by a senator
KYKAa TIL that for centuries, tuberculosis was thought to be hereditary, or caused by malnutrition, harsh climate, etc. It wasn’t until 1865 that French military doctor Jean-Antoine Villemin proved that TB was an infectious disease by inoculating lab rabbits with material from infected humans and cattle
Xg7D TIL that a US company cannot legally forbid you to talk about pay with your coworkers.