Who Spun It - find the ordinary push behind a paper spinner

Balanced a paper mind-power spinner on a needle and watched it turn? Log up to 6 rounds - cup on or off, hands away, near or close, breath normal or held, room air still or moving - and how much it turned. The page pairs rounds that differ in 1 condition, draws the bench and gives its verdict free: no spin yet, the room did it, needs a fair pair, warm hands, your breath or moving air, plus the next single change to try. One metered run explains every round and why that next round is worth trying. Built on the SkillSafe skill @alirezarezvani/runbook-generator.