"Measure the six variables that govern any complex skill The engineering team behind a disc-instrumentation company distilled the physics of disc flight — which involves aerodynamics, gyroscopic precession, and spin — into exactly six measurable metrics: speed, spin, wobble, hyzer angle, launch angle, and nose angle. Host Destin Sandlin reflects that this framework lets you "work on getting better yourself, even if you don't fully understand all the aerodynamics of it." Identifying the minimal set of measurable variables that drive performance in any complex skill — cooking, public speaking, investing — lets you improve systematically rather than by vague intuition. Source: Michael and John (Infinite Discs simulator team), Smarter Every Day, Why Does a Disc Golf Disc Curve?"