There’s a difference between precision and accuracy. It’s possible to have precise answers that are wrong.

(quote from RealReality.org/Real_Faith_and_Reason_Vol_2_-_Scientia.pdf)

For example, scientists observe and test. Then they make assumptions. Based on the assumptions, they calculate an age for the earth. These calculations don’t lead to tentative answers. They lead to arbitrary but precise answers. Arbitrary thinking is irrational.

(end quote)