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TIL the Grateful Dead briefly toured with a PA system called the Wall Of Sound that consisted of six hundred and four speakers, channelling twenty-six thousand watts of power. It has been called “the greatest vessel for the amplification of sound in history”.

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WL54 TIL: Thomas J. Grasso wanted SpaghettiOs for his last meal, but he was given Spaghetti instead. He wanted the press to know this.
dYGK TIL during the reign of the Khmer Rouge, there was a prison camp, named S-21, that had a death rate of 99.96%. S-21 was directed by a former math teacher who ordered “living autopsies,” had prisoners’ blood completely drained for use in hospitals, and used a “baby-smashing tree” to kill children.
jevn TIL: Under the Third Reich, Aryan mothers who devoted their lives to having children were awarded the Ehrenkreuz der Deutschen Mutter (Mother’s Cross) and were respected civil servants who were saluted on the streets by Hitler’s Youth.
E1jZo TIL that the acclaimed writer Leo Tolstoy converted to Christianity and became a anarchist and a pacifist based on the teachings of Jesus. He was a major inspiration to Gandhi and Martin Luther King.
wLAp8 TIL that, if extra-terrestrial life is found in our Solar System, it means the Great Filter (whatever keeps other life in the Cosmos from contacting us) is in Humanity's future, not its past. Basically, if we find life on Mars or Europa, we can be certain that our kind will never travel the stars.