[humanrebar]

> We should be clear... in these large organizations... HEAD is always broken.

I don't know about all of them, but a lot of them have CI set up such that HEAD is never broken for some definition of broken.

Practically speaking it's basically impossible to fuzz test everything, but typically builds and reasonably fast and reliable tests are run before HEAD includes new changes.

Being efficient about supporting this workflow is more or less what monorepo build systems like bazel, buck, and pants were designed for.