Author here, thanks for posting!

On the Haskell Discourse [0], someone posted about another Haskell library, units [1], which allows to define unit systems NOT limited to the 7 physical dimensions. For example, adding a base dimension for currency would be nice to model electricity prices in currency per energy.

[0]: https://discourse.haskell.org/t/blog-post-scientific-computi...

[1]: https://hackage.haskell.org/package/units

Dimension analysis is a super power in applied math. I was first taught it in chemistry, but was able to use it to avoid tripping myself up on just about every real world math problem I did...

(And I too changed an implementation to add units of measure to a system. It took a few days, and caused some grief with downstream system developers. But we also avoided the Mars Climate Orbiter experience in production )