What Is Pi, and Why Is It So Important?

[J-F Garnier]

(02-20-2024 04:48 PM)rprosperi Wrote:  "Fact: Scientists have calculated pi to a precision of a hundred trillion digits. However, mathematicians have estimated that an approximation of pi to 39 digits will suffice for any cosmological calculation humans might attempt. At that level of precision, which mathematicians achieved in 1630, you can calculate the circumference of the observable universe with an error smaller than the diameter of a single atom of hydrogen. "

This is a common statement, that just forgets that we don't know the diameter of the observable universe with the same accuracy - maybe 1% if the current theory is correct.
So using 22/7 or 3.14 would be enough to estimate the circumference of the observable universe.
I would just use 3.

J-F