Is there objective Truth?

[pocaracas]

A perfect circle can be physically made. And nature makes perfect spheres all the time as bubbles.

No it can't.  A perfect circle consists of a line composed of an infinite set of dimensionless points.  There is no such thing in the real world.  Do you realize how big soap molecules are?  It approximates a sphere, nothing more.  You are constructing the sphere by imagining that the molecules in a particular layer are connected, forming the sphere.   They aren't.  They are just molecules arranged on a circular pattern.  That you can't understand how there are no actual circles or spheres in the world does not bode well for the credibility of your 'theories'.

Is this a circle and a square?

Listen to Jorm.... she knows stuff.

Think about space as divided into 3D pixels.... voxels... each with a dimension of a Planck length, cubed.
The fact that we have a finite minimum length tells you that any circle made up by real particles, even really tiny ones, like neutrinos, would never ever ever ever be a perfect sphere.
For all our purposes, it would be as perfect as can be... but never perfect enough to yield the infinity of terms in PI.