Tool · the exponential engine
Your costs rise in a straight line.
Your value, with the square.
It's the difference between a corner shop and a startup. When your product is a network —picture the one in the book: many clinics share their antibiograms and each one gets back the living map of resistance in its region—, adding one more clinic costs almost nothing… yet it improves the data for every other one. Cost grows by adding; value grows by multiplying. That's Metcalfe's Law, and it shows best when you move it.
Drag it and watch the two curves pull apart.
How to read it
Cost grows by adding (∝ n). Each new clinic is one more dashboard, a few cents of compute. A straight line: predictable and cheap.
Value grows by multiplying (∝ n²). Here's the trick of a network: the new clinic's data doesn't get added to the pile, it crosses with every other clinic's data and improves the antibiogram of each. That's why value doesn't rise in a straight line: it rises like a parabola. Double the clinics and you multiply the map's worth by four.
An engineer can build the dashboard; what they can't do is know what to measure or get a veterinarian to trust them with their data. That clinical judgment and that trust from the profession —not the code— are your moat. That's why the exponential decoupling doesn't live in the animal: it lives in the data curated with veterinary judgment.
Honesty: that "with the square" is the intuition of a network effect (Metcalfe's Law), not an exact physical law —it overstates things when the network is huge—; but the direction is unmistakable. The real bottleneck isn't cost, it's earning the profession's trust. That's what the chapter is about.
The book lays out the five-step method to get there —and in the community you'll find someone to do it with, whether you have a partner or not—. Leave your email and be among the first.
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