Comment by WillAdams

Yeah, that sums things up well --- the problem of course is what happens when one works on a project which blurs boundaries.

I had to drop into BlockSCAD to rough out an arc algorithm for my current project:

https://github.com/WillAdams/gcodepreview

(see the subsubsection "Arcs for toolpaths and DXFs")

Jupyter Notebooks come close to allowing a seamless blending of text and algorithm, but they are sorely missing on the graphic design and vector graphics front --- which now that I write that, makes me realize that that is the big thing which I miss when trying to use them. Makes me wish for JuMP, a Jupyter Notebook which incorporates METAPOST --- if it also had an interactive drawing mode, it would be perfect.... (for my needs).