Because we conceptualise things by watering them down so that they’re more malleable and universal, but not so far that they’re unrepresentative of how reality works.
While there is no ‘curve’ or ‘circle’ in reality, them just being concepts we made, it’s useful to use pi because it’s a useful tool that works within the models we invented.
There’s a lot of things in the world that conform to certain rules, and we called those ‘circular’ and invented tools to deal with ‘circular’ things.
Because we conceptualise things by watering them down so that they’re more malleable and universal, but not so far that they’re unrepresentative of how reality works.
While there is no ‘curve’ or ‘circle’ in reality, them just being concepts we made, it’s useful to use pi because it’s a useful tool that works within the models we invented.
There’s a lot of things in the world that conform to certain rules, and we called those ‘circular’ and invented tools to deal with ‘circular’ things.
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