“The more explicit and one-off the transaction, the more unrelated and anonymous the parties to the transaction, and the larger the set of participants who can transact with one another, the more the transaction approaches the ideal of a market transaction. The more implicit the terms of the transaction, the more related the parties who transact, the smaller the group that can potentially transact, the less equal the exchange, the broader the range of transactions and the more repetitive transactions are over time between the same parties, the more the transactions approach a relationship. The thicker the web of relationships tying a group of individuals together, the more it is a community. In a sense, the community and the market are two ends of a continuum.”