ABSTRACT
In 1940 the application of feedback theory to biological creatures set off one of the most astonishing confluences of scientific thought in our own or perhaps any century. In terms of brain science, emotions stem from one of the most ancient parts of the brain: the limbic system, and they affect all our ideas, even the most abstract and intellectual. The limbic system is involved in all our judgments of satisfaction. Mammals are more adaptive. When the first mammals evolved from reptiles some 200 million years ago, they found their ecological niche: nighttime hunting. As mammals began, some 50 million years ago, to evolve monkeys, apes, and hominids, yet another brain began to develop on top of the limbic system. The brain scientists are confirming and refining what some psychologists have derived long before from studying behaviors.
