All laws
Metcalfe's Law
A network's value grows faster than its size.
If
A network of n nodes has n(n−1)/2 possible connections, so its value was claimed to scale with n². The exponent is disputed — n log n fits real networks better — but the shape holds: each new node adds value to every existing node, which is why networks tip rather than grow smoothly.
Then
For a product whose value comes from other users, spend early effort on the smallest network that is already useful to its own members, not on features. For a team, do the opposite and cut connections.
Unless
The Same Quadratic Is a Cost — connections are an asset between users and a liability between colleagues; Brooks' Law is Metcalfe's Law with the sign flipped