The speaker says the team writes pull-request descriptions as specifications of the changes, with both a high-level account and file-level pointers showing where changes occurred and which boundaries they touch.

“So we're thoughtful about like our peer descriptions. We make them be not just like, you know, a one paragraph. It's more like it is effectively like a spec of what has happened in the PR, and there's even like kind of line, um, file level pointers to things where things have changed, so you not only get the high level of what's happened, but even the kind of the, the construction of the files and sort of the surface level boundaries that you're touching.”