[ColinDabritz]

The article makes some good points, part of the problem I have with describing "functions" is that there really is a LOT to unpack there, but after years of software development the idea of a function with all its nuance is a single idea, very compressed. To teach that you have to unpack it and take it slow.

I would also note that expertise in one field doesn't mean you have expertise in another field. Many (or most) expert software engineers are not expert educators. They are separate skills. It's beautiful to watch someone with both skill sets work. I strive for understanding and expertise in both, and I hope that it helps.