Wisdom comes from noticing that evolution does not march toward one “best” design. Take predators. Mammalian predators tended to evolve incisors, or enlarged canine “fangs” with cutting or crushing cheek teeth. Predatory dinosaurs often carried a mouth full of fangs — similar sharp, recurved teeth built for gripping and slicing. Dinosaurs tended to repeat one successful tooth design; mammals increasingly divided the work among different teeth.