› added 9 years ago

217

TIL that worker productivity starts to decrease after working more than 50 hours a week, then decreases sharply after working more than 55 hours a week to the point that working 70 hours produces nothing more than those who work 15 hours less.

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oBYK8 TIL Some scholars believe smiling was an invention of the Middle Ages and point out that not all cultures today use smiles to show happiness. This challenges the popular notion of 7 universal facial expressions.
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kOO11 TIL during the 51 day siege by the FBI on the Branch Davidian compound in Waco, Texas, the FBI used sleep deprivation to try to force the suspects out. This included around the clock broadcasts of jet planes, screams from rabbits being slaughtered and “These boots were made for walking”
Br91b TIL John Brown, in 1859, was the first person to be executed for treason in the United States
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