Comment by bregma

You still have to be aware of the difference between precision and accuracy, and how to propagate precision through calculations to maintain accuracy. It's a forgotten skill that lets us now create data out of whole cloth and call it actionable information but back when slide rules and log tables ruled the day the difference was stressed over and over in math and science classes and you would fail an assignment or a test question if you had the wrong precision in a result.

We have speed electronic calculators now instead of slide rules, but they give a wronger answer and people aren't even aware of it or know why.