Not as immediately obvious as reflexively avoiding a branch, but on my model, you ought to think of language (first gesture, then speech) as an exaptation of cognitive adaptations for flintknapping. F5 in Old World monkeys is an interface between abstract goal representations and concrete action sequences, and F5 is believed to be the homologue of Broca’s area in humans. Looks like F5 generates and interprets hierarchical act strings as such (i.e. regardless of modality). You can hill climb on hierarchy depth, breadth, goal maintenance duration, switching speed (goals are active until completed, losing track of a goal being premature goal inactivation), which lends credibility to this idea. I think of Broca’s area as F5 with more atomic action categories + big model smell.
Not as immediately obvious as reflexively avoiding a branch, but on my model, you ought to think of language (first gesture, then speech) as an exaptation of cognitive adaptations for flintknapping. F5 in Old World monkeys is an interface between abstract goal representations and concrete action sequences, and F5 is believed to be the homologue of Broca’s area in humans. Looks like F5 generates and interprets hierarchical act strings as such (i.e. regardless of modality). You can hill climb on hierarchy depth, breadth, goal maintenance duration, switching speed (goals are active until completed, losing track of a goal being premature goal inactivation), which lends credibility to this idea. I think of Broca’s area as F5 with more atomic action categories + big model smell.