Team & Delivery Laws for Product Managers
The fastest team in the world can be slowed to a crawl by the structure it sits inside. The laws in this category are about the shape of delivery — why adding engineers to a late project makes it later (Brooks's), why the product reflects the org chart that built it (Conway's), why the 'clean rewrite' is usually neither (Gall's), and why a deadline of three months will get used in full, regardless of whether three weeks would have sufficed (Parkinson's).
They also cover the patterns PMs have to actively fight: the rule whose purpose nobody remembers but nobody should remove (Chesterton's Fence), the hype cycle the whole company is currently inside (Gartner, Amara), and the human coordination ceiling that no amount of Slack can raise (Dunbar).
These laws are what you want in your pocket when you're negotiating a deadline, proposing a reorg, inheriting a legacy product, or watching a team sprint toward a rewrite. Most of them are about knowing what not to do — which is, as always, the hardest part of the job.
The 9 laws in this category
- Amara's LawShort-Term Hype, Long-Term ImpactWe overestimate what technology will do in 2 years and underestimate what it will do in 10.
- Brooks's LawAdding People Makes It LaterAdding people to a late project makes it later, because coordination costs grow faster than the extra hands help.
- Chesterton's FenceUnderstand Before You RemoveA rule or process you don't understand is probably there for a reason — so find the reason before removing it.
- Conway's LawOrg Structure ShipsA product's structure ends up mirroring the communication structure of the team that built it.
- Dunbar's NumberThe 150 RuleStable working groups top out around 150 people — and real trust only works at around 5.
- Gall's LawComplex Evolves from SimpleEvery complex system that works started as a simple system that worked. Rebuilding from scratch almost always fails — because you lose everything the old system had quietly learned to handle.
- Gartner Hype CyclePeak, Trough, PlateauNew technologies peak in expectation, crash into disappointment, then plateau into quiet everyday use.
- Law of TrivialityBikesheddingTeams spend the most time on the decisions that matter the least — because everyone feels qualified to have an opinion on them.
- Parkinson's LawWork Fills the TimeWork expands to fill the time available — so generous deadlines mostly buy you polish on the wrong things.