Scenario 2 (Utopia) Payoff Correlation = +1.00
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:
  • Best Row showed the most Self-Gain.
  • Best Cell
  • Minimize Loss
  • Assume Benevolence
  • Assume Selfish
  • Most Surprise
  • Assume Persecution
  • Assume Death-Wish
  • Least Surprise showed the least Self-Gain.
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.