Nikola Tesla once stood in the Colorado wilderness and shot 135-foot bolts of artificial lightning into the night sky. About 400 years earlier, the Inca built an entire stone metropolis directly on top of one of the most volatile fault lines in the Andes. On paper, both were architectural and scientific madness. In practice, they reshaped the world. This double-feature episode pairs them to ask a deeper question: how often is absolute objective truth actually required to achieve something revolutionary?

We trace the Inca side first: Cuzco, Machu Picchu, and the empire's ashlar masonry, the trapezoidal doorways and slanted walls that turned out to be brilliant earthquake engineering, the road system that ran across mountains without writing or wheels, and the way Hiram Bingham III ultimately took credit for what local farmers like Mel ...