Fig 2. Main results at Binmore’s three levels of analysis.

Bars reflect standard errors. Note that the results for the two dynamic conditions were the same by efficiency measures (a) and fairness measures (b), yet differed markedly in stability (c). Higher payoff differences increased stability (i.e. decreased surprisal) within the dynamic condition, but had no effect on stability in the ballistic condition. S3 Fig shows the same results using the less interpretable but more technically correct measure of “mean rank” on the y-axis.