Our brains respond instantly when chaos appears, with simple, hyper-fast circuits maintained from the ancient days, when our ancestors dwelled in trees, and snakes struck in a flash.32 After that nigh-instantaneous, deeply reflexive bodily response comes the later-evolving, more complex but slower responses of emotions—and, after that, comes thinking, of the higher order, which can extend over seconds, minutes or years. All that response is instinctive, in some sense—but the faster the response, the more instinctive.