As promised a Taster of Marcion

I read this and stopped, as we say in Liverpool “are you takin the piss?”

So a set is also a tensor? a group? a category? No, of course they are not.

Here’s an explanation by a mathematician and electrical engineer:

I have his book A Student’s Guide to Vectors and Tensors and it is very accessible. Mathematics is often best taught visually too, pages and pages of waffle are hardly as digestible as something pictorial or dynamic like a video when explaining somethin technical to novices.