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Short answer: A solitary genius makes for a better screenplay

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xVgLD TIL about Cardiopulmonary Bypass, a technique in which a machine temporarily takes over the function of the heart and lungs during surgery, maintaining the circulation of blood and the oxygen content of the patient's body.
VBVDp TIL The reason tennis balls are yellow is largely thanks to Sir David Attenborough
jNG0n TIL that the movie Swingers cost about $750K to make. $500K for music licensing and $250K for the actual movie itself
m1K5v TIL in the social spider Anelosimus studiosus, adult males will mate with juvenile females in mock copulation (essentially foreplay). This playful behavior is believed to decrease female aggression later in life, and increase sexual performance of both males and adult females.
gW6W TIL that the initial probability of getting shot in the first round in Russian Roulette is not 1 in 6 , since the weight of the bullet makes the spinning cylinder more likely to stop with the bullet at the bottom.