 There are different ways to conceive of an economic system based in reciprocity. Even a laissez-faire entitlement system of free transfer and exchange that satisfies Pareto efficiency satisfies reciprocity in a weak sense (assuming the absence of negative externalities) since everyone is presumably made better off by the exchanges and transfers they make. But the Pareto principle and laissez-faire entitlement principles are compatible with enormous gains to the more advantaged while the least advantaged gain only minimally, if at all. This is “trickle-down,” where the poor in effect cannot advance unless the rich maximally benefit, and where benefits to the rich need not benefit the poor at all. The kind of reciprocity provided by the principle of restricted utility is more robust than laissez-faire and the Pareto principle since it guarantees a social minimum. Everyone has a stake in the economic system at least to the degree that it meets the basic economic needs of all. But, beyond this point wealth and income are generated and distributed so as to maximize overall wealth and therewith (presumably) overall utility. Further gains to those better off need not advance the position of the least advantaged, and indeed sometimes may come at their expense so long as the social minimum is maintained.