The brain costs about a penny every 5 hours to operate, less than a nickel a day—now that’s an efficient machine!
—Read Montague, Why Choose this Book?1
Your brain, fine-tuned over millions of years of evolution, responds swiftly and usually effectively to virtually any situation. And it does so using a third of the energy needed to power the average household light bulb.
On this meager amount of energy, the brain reasons, makes decisions and solves problems, executes plans, dreams dreams, experiences emotions, and constantly monitors its surroundings by evaluating the billions of bits of data that arrive, every second, from over 20 different senses.2 It regulates blood flow and pressure, monitors its chemical constituents, ...