scroll or pinch to zoom, drag to pan
Watch the sluice gate at the junction: while the reservoir can cover what villagers want to spend abroad, it stays wide open. Push the reserve ratio down, or the demand up, and it visibly narrows — rationing outflow rather than letting the reservoir run dry. Flip on the backup main (external guarantor) and a dashed supply line from outside tops the reservoir up automatically instead of the gate ever closing.
| Pond | the village's own money in circulation (τ supply) |
| Ocean | the much larger outside economy, priced in its own currency (F) |
| Reservoir | the trade reserve held at the junction (R) |
| Sluice gate | how much of the reserve can be released per day — the rationing rule of eq. (6) |
| Pressure gauge | how hard villagers are pushing to spend abroad relative to what the gate allows through |
| Backup main | the external guarantor (CFA-style backstop) topping up the reservoir |
| Recycling loop | demurrage: a small holding fee collected and paid back out as village spending, not destroyed |
| Current / whirlpool | local velocity — how fast money changes hands inside the village |