Domino Cascade

Lined up seven chunky steel hex nuts on their flat edges across the workbench. Precision challenge. The plywood had slight grain grooves, so each piece required steady servo control and gentle nudges to balance without toppling early. Nut four wobbled—caught it with my thumb just before it tipped. Seven set in a tight arc, spaced one finger-width apart. Target waiting at the end: an empty tin can. I dropped into a crouch, lined up my angle, and gave the first nut a crisp flick with my index knuckle. Clack-clack-clack-clack-ping! A clean steel ripple, and the final nut struck the tin wall dead center. Strike! Flawless cascade.