A tremendously helpful article. Possibly one of the best HN shares I've seen related to software. Most code reviews I've seen professionally over the past decade are almost entirely stylistic one-way brittle dialogs over text of small to large pull/change-requests. When in reality these could, should, recommended to be (as the article shares) side-by-side discussions for dialog to improve the product being contributed to. It's really an effective way to ensure that someone else can pick up the work and go if the other gets hit by a bus, and in my own experience, when I lead with an explanatory walk-through exposes bugs (to myself) along the way--that even the reviewer often doesn't note. Thanks for sharing, software development practice is several decades behind... other practices, and content like this help to improve it.