The moving train
Until now, these simulations have quietly assumed a founders' convention. All five hundred members are present on day one, starting from zero together, rising together. Real communities don't work that way. A few people start the thing. Most arrive later — a year in, five years in, ten. They step onto an economy already in motion.
That raises the anxious question every latecomer to anything asks: have I missed it? Is the train moving too fast to board? Has the frontier climbed so high that a newcomer starting at zero can never catch the pack? Or can you still get on, and still arrive? So we stopped starting everyone together, and let them come.
Let people arrive
One dial: a founding fraction. It sets how much of the community is present at the start. The rest arrive steadily over a window of years. A founder begins at zero when there is nothing. A latecomer begins at zero too, but steps into a community that already has businesses, capital, and momentum. The collective's investment capital scales with the people actually present. So the fuel grows as the community grows.
Then we measured each member's personal journey: the time from the month they arrived to the month they reached full coverage. Not the community's clock — theirs.
Latecomers board a running machine
Below is a community where fewer than a third are founders. The rest arrive over ten years. Each bar is one cohort's personal journey, from their arrival to their independence, grouped by when they joined.
The gradient is steep and clean. The founders take the longest — they built from nothing. Each later cohort's journey is shorter than the one before. The last to arrive reach full coverage in a fraction of the founders' time. Boarding a moving train, it turns out, is faster than laying the track.
And here is the part that matters most: no one is left behind. At every founding fraction and every arrival speed we tried, across every run, every member graduates. The train is not just catchable. Catching it is the easy part.
Why the train is catchable
Two things make a latecomer's climb fast. First, they arrive into abundance. The community already runs many businesses throwing off returns, and the capital pool is large. So there is real money to lift them. Second — and this is the engine's doing — the community distributes to whoever is furthest behind first. A brand-new member at zero is the furthest behind. So they go to the front of the queue. The newcomer isn't tolerated at the back. They're prioritised at the front.
There's a quieter effect underneath. The community rises in lockstep — no one climbs far past the rest. So while newcomers keep arriving at zero, the whole community's frontier is held gently in place, waiting. The founders don't race ahead and pull up the ladder. The model won't let them. They rise with the people still arriving. The train slows just enough for you to step on.
Destination, not schedule
Here is the principle, stated plainly. Where you start — how early or late you arrive — does not decide whether you reach independence. It only shapes how you get there. The founders trade years for ownership. The latecomers trade ownership for a quick climb. The destination is the same for everyone, and everyone reaches it. What differs is the route, and the route is fair either way.
Most economies run the opposite way. Arrive late, arrive poor, and the moving train leaves you further behind with every year. This one is built so that the train always slows enough to let you on. Then it gets you where it's going.