[arsenide]

It works for math at the scale I use it.

Excel is great in my industry (slot machine game/math design). It is fantastic for doing game calculations and there are reasonable ways to do error handling/checking for correctness.

I could say the same about programming a web app without writing tests/spending some time on system architecture. It looks fine until it doesn’t work.

In both instances of development (I argue constructing an Excel workbook in my line of work is very similar to programming) there are ways to mitigate risks by doing things similar to “writing tests”.