What Robin Dunbar's ~150 limit claims, and how it shows up in org design, on-call, and communication load.
Why the last slice of a build eats most of the calendar, and what to do about it.
Treat Murphy's law as risk hygiene, not fate. Defensive design, testing, and SRE habits turn the slogan into something you can ship.
When complex systems read as magic, people stop asking what has to stay true for them to work.
Why 'be conservative in what you send, liberal in what you accept' still shapes APIs and parsers, and where it breaks.
Why velocity, coverage targets, and badly written OKRs invite gaming once they become the scoreboard.
Hunt and Thomas on why duplicated knowledge is a maintenance tax, and when merging similar code makes change harder.