Geometry as a guarantee.
Watching a physics interview, I encountered Paul Schatz, the Swiss engineer who discovered the oloid in 1929, a shape where every point on its surface contacts the ground exactly once per rolling cycle. The insight was immediate: geometry as a guarantee. Changing material delays failure; changing geometry eliminates it. What followed was a pre-registered program, hardened by adversarial review, that earned an endorsement from the world's leading oloid authority and surfaced a 25.6x thermal advantage that rewrote the headline of its own paper mid-experiment.