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Tennis uses the imperial system of scoring
(programming.dev)
Sometimes we have those little epiphanies in the shower.. sometimes they come from other places. This is a home for those epiphanies.
Man, if only the decimal system had been invented before clocks, they could simply make it "4 points with at least 2 point advantage", like 4-2, 5-3, 6-4, etc.
There's still the whole mess of using 2 extra layers of "score this much with 2 point advantage", because I guess people don't have anything better to do than watch a game go on for 6+ hours
They really didn't, though. You think the average factory worker was in the stand watching their betters hit those balls? And look at cricket ffs!