Once the evidence is secure and independent, then archaeologists can triangulate, set up a system of mutual constraint among different lines of evidence bearing on a hypothesis and ultimately on a theory.
Fairness will give rise to obligations whenever there is a beneficial practice of mutual constraint and accepted benefit it matters not whether this is sustained by a law claiming jurisdiction over the subjects.
Finally, the model of mutual constraint simulates an intermediate situation, where evolution in both sexes is constrained by the phenotype of the other sex.
The main idea of our approach is to cast the selection of correspondences between points on the surfaces in a game-theoretic framework, where a natural selection process allows matching points that satisfy a mutual rigidity constraint to thrive, eliminating all the other correspondences.
This might represent a mutual steric constraint.
We simulated three simple models for the evolution of male and female coloration (which we call constraint on females, constraint on males, and mutual constraint) and test their predictions against a real dataset.
For carotenoid coloration, the model of male constraint was rejected using the same statistics as above (DSD and DRS, both P < 0.01), but there was only a non-significant trend to reject the model of mutual constraint (DSD and DRS, P = 0.11 and 0.12).
The pattern of natural selection among 71 pairs of 3' overlapping genes (all of them having an overlap larger than 15 nucleotides) conserved at least in two prokaryotic genomes showed a statistically significant bias toward the 123/132 phase, thus ensuring the least mutual constraint on non-conservative amino acid replacements in both overlapping coding sequences [ 5].
But the election manoeuvre seemed to break the bond of loyalty and mutual constraint.
The best model so far of such mutual constraint is research on vision.
