22:28
Trader Lenny, the forgetful scholar. Leader of the biscuit Brigade in service of the Church of Dadbod
Chimpanzees are known to trade services, such as grooming for food, but the ability does not seem to extend to trading commodities.
Most of the trading of services seems to occur between partners who interact a lot, and so are familiar with each others' behavior. The chimpanzees thus know whether the risk is likely to pay off, and most of the time, what's being traded is a relatively inexpensive commodity.