Brooks's Law

ELI5 — The Vibe Check

Brooks's Law: 'Adding people to a late software project makes it later.' New people need onboarding, communication overhead grows quadratically, and existing developers spend time teaching instead of coding. Nine women can't make a baby in one month. Sometimes fewer people is faster.

Real Talk

Brooks's Law (from 'The Mythical Man-Month', 1975) observes that adding personnel to a late project increases communication overhead (n*(n-1)/2 channels), ramp-up time, and task partitioning complexity. The net effect is further delays. Applies most strongly to complex, interdependent tasks.

When You'll Hear This

"Brooks's Law is why we didn't hire 5 contractors to hit the deadline — it would've made things worse." / "Communication overhead grows quadratically — doubling the team doesn't double the output."