Doesn't matter, we can know enough to get structural work done. Everything else is decoration. To clarify: we may never truly know the value of pi as it is an

Doesn't matter, we can know enough to get structural work done. Everything else is decoration. To clarify: we may never truly know the value of pi as it is an irrational number, but we really only need the first 5 digits or so for most things. Still, you have to be careful of accuracy loss and should wait to use its numeric representation until the last possible moment.