*The Sovereign Individual* — written in 1997, no Bitcoin, no internet money, just Davidson and Rees-Mogg watching the math and following it to its conclusion. Still the most unsettling read in the space because it doesn't argue for Bitcoin; it *predicts* it, almost accidentally, while making a much larger argument about violence, sovereignty, and the physics of power. Explicitly Bitcoin books tell you what to think. That one rewires how you think. Different category.