It seems to me that the "truth" is whatever works, and as man's projects have advanced, so has his perception of the world. When the flat earth stopped working, a more round earth became realistic. Up until then no one needed a round earth.

When Newtonian mechanics ran into more accurate measurements and became deficient, relativity came along. And then quantum mechanics.

The flat earth is true. Your house lot is measured as a plane, and that works. The rounder earth is true, and space ships can find their way out and back. And so on.

Absolute truth? No need for it, even if one could find it. Do we need to know pi to the 40 billionth? Nope. So while no estimate of pi is right, they aren't wrong, either.