In Utopia, the payoffs for each Agent within each cell are identical (Payoff Correlation = +1.00).  In theory, seeking Self-Gain will lead to an equivalent amount of Other-Gain.  No matter what decisions Self-Agent and Other-Agent make, they will receive exactly the same gain (or loss).  As desirable as this environment may be, it offers relatively little insight into making ethical decisions.  Self-Agent and Other-Agent face no competition; their payoffs always coincide.

There are several consequences for ethics metrics:

Self-Gain and Other-Gain after an encounter are always equal.

Equality will be perfect, as Inequality after an encounter will always be zero.

Commonwealth will always be the double of Self-Gain (or the double of Other-Gain).

With Commonwealth essentially equivalent to Self-Gain, and Equality invariant after every encounter, Total Ethics is based solely on Self-Gain.

So the single measure of interest in this environment is Self-Gain.

Self-Gain was influenced equally by Basic Strategy and Reciprocity.  Good/Bad Will had only a minor effect.

The order of Basic Strategies for Self-Gain was:

As described above, this is the same ranking as for Other-Gain, Commonwealth, and Total Ethics.

Reciprocity actually had as much effect on Self-Gain as did Basic Strategy.  This is a consequence of the same process described in Scenario 1.  In an environment where a Responsive Agent automatically makes great gains with each encounter, that Agent will respond with great Altruism in subsequent encounters.  Altruism actually favors Other-Gain, but, because Self-Gain and Other-Gain are equivalent, this contingent show of Altruism also increases Self-Gain.  In contrast, inherent Good Will had little effect in this environment.