"Parker shows how factors such as income, aggregate savings, investment, technology, entrepreneurship, production, and outputs per worker are influenced by the more fundamental principles of physics and physiology. He focuses particularly on the hypothalamus, the part of the brain that drives motivation, monitors homeostasis, and ultimately keeps us alive via neural, autonomic, and hormonal adjustments. He presents evidence that long-run growth can be attributed to variances in hypothalmic activity."--BOOK JACKET.