(October 18, 2016 at 2:37 pm)Arkilogue Wrote:(October 18, 2016 at 1:22 pm)Jörmungandr Wrote: Yes, this world. There are no perfect circles in this world so pi is an idealization created by minds. It doesn't exist anywhere but in mind.
A perfect circle can be physically made. And nature makes perfect spheres all the time as bubbles.
Except not.
Particles are moving. That's what heat is. So unless you've managed to find a bubble at 0 degrees Kelvin, and unless it actually IS as perfect as you say (it still wouldn't be), then nope. . . "perfect circle" is only a geometrical idea.