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The science of the spins

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EgywV Today I learned that Dwayne Johnson is the grandson of Lia Maivia, one of the first female promoters of wrestling.
GYB6J TIL the idea of black holes was first proposed in 1783 by John Michell, calling them "dark stars" and proposing a method to detect them by looking for star systems that showed the gravitational effects of two stars, but only one star was visible, which is indeed how scientists look for them today
BrVjD TIL that George Lucas pitched the idea of Indiana Jones to Steven Spielberg while they were building a giant sandcastle together while on vacation in Hawaii.
rnax TIL During Apartheid in South Africa, Glasgow renamed the street which at the time was the address of the South African Consulate from St George’s Place to Nelson Mandela Place. Consular officials would be forced to look at his name when reading and addressing postal correspondence.
kOBM1 TIL there is a philosophical concept called the explanatory gap which is used to describe the inability to describe concepts. For instance, it is impossible to describe a color to a blind person and have them accurately understand and visualize that color.