[stuhood]

I think that `inverting` also subsumes async functions/values, which is pretty neat!

In the case where asynchrony was actually necessary, it seems like a great alternative to function coloring.

But whether you should actually use it for something like their `sub_min` example is highly dependent on how good the performance of their implementation is. Creating a graph of references rather than making two passes over an array of integers is not clearly faster ... or clearer, for that matter.