Real Math (symbolic math, like mathematicians do) and a spreadsheet-like feedback loop
See https://slott56.github.io/replacing-a-spreadsheet/. This document is really exciting (to me).
This is still shaky -- I'm still learning -- but it's a very cool combination of Python components sympy and Jupyter Lab. As a bonus, Jupyter{Book} appeals to me as a writer. There's an aspect of literate programing …
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