> We're going to leave the mathematics and equations out of it for now. There's a bunch of interesting maths behind it, but it's better to start with what it ac

> We're going to leave the mathematics and equations out of it for now. There's a bunch of interesting maths behind it, but it's better to start with what it actually does, and why you'd want to use it first. If you want to know more about the how, there's some further reading suggestions below! Yes, yes, yes, yes! Anybody teaching really has to understand that if you need a formula to explain a concept, you haven't understood the concept yourself OR you simply don't know how to explain it yet. Sure, there are exceptions (there always are), but in my experience, lecturers, teachers and academics reach for formulas to "explain" things too quickly. Formulas are not explanations. They serve as PROOF that what you explained actually works.