Earlier quoted context omitted.
Did you dismiss physics for the same reason? A perfectly elastic ball rolling down a frictionless plane, how absurd!
In physics courses, it's pretty clear that perfect balls and frictionless planes aren't actually real. OTOH, I recently had a debate with an economist that nearly insulted me because I doubted that infinite GDP growth was possible in a finite world; you "simply" need to infinitely enhance value of goods and services, which is perfectly possible because it hasn't been proved impossible. Plus it's taught in Econ 101, s…
A circle is finite but what about Pi? Does it ever end?