if the diameter of a circle is a finite value, and the circumference of a circle is a finite value, how can the ratio of those two numbers be irrational? a new team, yee and kondo, just determined the value of pi to 5 trillion digits. (wow) it takes only 39 digits of pi to make a circle the size of the observable universe accurate to within one hydrogen atom. i assume something like maybe 50 digits (?) to be accurate to within the planck length. does anything past that point actually make any sense?