I Did Not Know That Yesterday is a knowledge repository where questions are answered.
Questions like:
* Does blowing on hot soup really cool it down?
* Who invented the shower?
* What does 'auld lang syne' really mean?
* Who was the smartest U.S. president?
* Why do we say 'pair of pants' when referring to one garment?
* Why is normal vision referred to as 20/20?
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