At first the ULH seemed to predict too much plasticity relative to observation, but on reflection I think it might predict the right amount. To square ULH with human universals, we have to hypothesize that the general structure and the conditions of human life robustly result in convergence to certain attractors. But the big advantage of this hypothesis is that it neatly explains why certain mental comlexes like farmer morality sometimes seems to have innate support while also being sometimes unlearnable and possibly not existing before agriculture.