Picture a factory where every machine is perfectly calibrated and every operator is an expert, and yet, every time someone new joins, it takes them three weeks to figure out what each lever does. Nobody would call that factory efficient. And yet that’s exactly how a huge number of software and hardware projects run: the product is excellent, the team is brilliant, and the knowledge lives only inside the heads of the people who built it.
Documentation isn’t a cosmetic add-on to development. It’s a production phase, just as real as testing or quality control, except that, unlike those phases, it doesn’t fail loudly. A bug breaks the application in public. The absence of documentation breaks things in private: in the new hire who takes twice as long to become productive, in the customer who abandons a product because they never understood how to use it, in the engineer who inherits a system and has to do code archaeology just to understand a decision made two years ago that nobody remembers anymore.
The Cost Nobody Sees Being Paid
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