Gall's Law

Ecology and Climate: Feedbacks Decide the Outcome

Remove one predator and rivers can change course. The size of a change tells you little — what matters is whether the system amplifies it or absorbs it.

Software Engineering: Code Is Read Far More Than It Is Written

Most engineering time goes on code that already exists. Once you accept that, the practices that look like fussiness turn out to be straightforward economics.

Gall's Law: Complex Things That Work Were Never Built That Way

Every complex system that works turns out to have grown from a simple one that worked. Designing the finished version from scratch doesn't just take longer — it has a startlingly poor success rate.

Emergence: The Traffic Jam That Nobody Caused

You drive through a ten-minute jam and past no accident. The jam was real, it moved backwards down the road, and no car was it. A great deal of the world is built this way.

Entropy: Why Order Is Always the Expensive Option

A bicycle left in a field rusts; a rusted bicycle never un-rusts. That asymmetry governs warehouses, codebases, and institutions just as strictly as it governs steel.

Parkinson's Law: The Deadline Decides the Duration

A two-page report takes a week if you have a week and a month if you have a month, and comes out about the same. Where the extra time goes is more interesting than the fact that it vanishes.

Technical Debt: The Loan Nobody Remembers Taking

Cunningham's metaphor was never about bad code. It was about a rational trade — ship now, pay interest later — and the interest is levied on every future change you make.

Startups: Most Advice Comes From the People It Worked For

Persistence and bold bets describe the founders who succeeded — and just as many who didn't, and aren't being interviewed. A structural view of these companies is more useful than the folklore.

Cloud and Infrastructure: Renting Instead of Guessing

Before the cloud you bought servers for your busiest hour and let them idle the rest of the year. The change was financial rather than technical — and that is why it mattered so much.