Hardware is unforgiving

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excerpt This isn't to say that software isn't hard, it's just a different kind of hard: the sort of hard that can be attacked with genius and perseverance, even without experience. But, if you want to build a ship, and you "only" have a decade of experience with carpentry, milling, metalworking, etc., well, good luck. You're going to need it. With a large ship, “minor” fixes can take days or weeks, and a fundamental flaw means that your ship sinks and you've lost half a year of work and tens of millions of dollars. By the time you get to something with the complexity of a modern high-performance microprocessor, a minor bug discovered in production costs three months and five million dollars. A fundamental flaw in the architecture will cost you five years and hundreds of millions of dollars2. Physical mistakes are costly. There's no undo and editing isn't simply a matter of pressing some keys; changes consume real, physical resources. You need enough wisdom and experience to avoid common mistakes entirely – especially the ones that can't be fixed. on 1/25/2020, 9:00:23 PM