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Thinking out loud.
TradeOff is being designed in public. These notes explain the decisions, including the ones that will look wrong until they look obvious.
Why credits beat barter
The double coincidence of wants has killed every swap site since the 1990s. Here is the mechanism that survives contact with real neighbours.
One town at a time, on purpose
A national launch with nobody nearby is an empty room. Why 200 members in one postcode beats 20,000 across the country.