"Looking across the history of science, we see our intuition is often the biggest obstacle to discovering the truth. Scientific frameworks are often difficult to discover, not because they are complex, but because intuitive but incorrect assumptions keep us from seeing the correct answer. Astronomers before Copernicus wrongly assumed that the earth was stationary at the center of the universe because it feels stationary and appears to be at the center of the universe. It was intuitively obvious that the stars were all part of a giant spinning sphere, with us at its center. To suggest the Earth was spinning like a top, the surface moving at nearly a thousand miles an hour, and that the entire Earth was hurtling through space—not to mention that stars are trillions of miles away—would have marked you as a lunatic. But that turned out to be the correct framework. Simple to understand, but intuitively incorrect."