re: Circles don't actually exist. At best, they are tubes.

Plato's theory of forms

quote:

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According to this theory, Forms—conventionally capitalized and also commonly translated as "Ideas"—are the non-physical, timeless, absolute, and unchangeable essences of all things, of which objects and matter in the physical world are merely imitations.

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Under this theory, a circle does exist, in fact, a perfect circle exists, the most circley circle that ever was and ever will be exists as the form or essence of the Circle. Not only that but this form is more real than anything in our world because our world is crippled by physical limitations. Meaning an object does not have to be physically perceptible in order to exist . Whatever circle a man draws would therefore merely be an approximation of what a circle is, the one true circle





or something like that