Advocates of natural selection usually regard rationality as redundant, i.e., as a mere linguistic device to describe natural selection. But this Redundancy Thesis faces the anomaly that rationality differs from natural selection. One solution is to conceive rationality as a trait selected by the neo-Darwinian mechanism of natural selection as . But this Rationality-qua-Trait Thesis faces a problem as well: Following neo-Darwinism, one cannot classify one allele of, e.g., eyesight as better than another without reference to constraintswhile one can classify rationality as better than irrationality irrespective of constraints. Therefore, natural selection cannot be a trait. This leads us to the only solution: Rationality is actually a method that cannot be reduced to a trait. This Rationality-qua-Method Thesis lays the ground for alternative, developmental views of evolution.
Redundancy Thesis rationality anomaly Rationality-qua-Trait Thesis incoherence problem Rationality-qua-Method