David Deutsch's work delves deeply into the nature of knowledge, progress, and the boundless potential of human understanding. This book presents a compelling argument that the journey of human civilization is marked not by limits but by the continuous expansion of explanatory power, which can transform the world in profound ways.

• The Principle of Optimism: Problems are inevitable, but all problems are solvable given the right knowledge and effort.
• Knowledge as the Driver of Progress: Human progress is fundamentally about creating better explanations and understanding rather than just accumulating data.
• The Role...
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