The central argument of the book is that human progress is not driven by intelligence, culture, or government planning, but by . Ridley argues that the invention of trade (barter) allowed humans to specialize, which in turn led to the accumulation of knowledge and technological advancement.
One of the key mechanisms driving human progress, according to Ridley, is trade. By exchanging ideas, goods, and services, nations and individuals have been able to specialize, innovate, and grow. Ridley argues that globalization, despite its challenges, has been a net positive for humanity, lifting millions out of poverty and creating new opportunities for cooperation and innovation. el optimista racional matt ridley pdf