A strange little side quest
A small trivia drop for Best Dressed Couple: During much of the 19th century in the United States, visibly painted cosmetics became socially unacceptable even though beauty practices never disappeared. The surprising part is how quickly the next milestone followed. In 1958, Tennis for Two used an analog computer and an oscilloscope to turn simple physics into a playable tennis-like demonstration. That history is one reason familiar mechanics can still feel new when they are recombined well.
