My first ever EM showed me this piece ~10 years ago, and I still think about it a lot. One pattern I've adopted is to keep as much code to be synchronous as possible. On larger teams, especially when the slop-cannon is really going, I can at least depend on codeowners to tag me if someone tries to convert something to async (eg. adding a DB call somewhere), because they chain of things that need to be converted to async is so long. Then I can jump in and say "this entire chain of code is sync, if you want a DB call, do it somewhere else"
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