Flicker

nothing on this screen has ever moved.

12 still dots + a frame-rate slider — find where your brain invents motion

Every dot on this screen sits in one fixed spot and only ever blinks on and off — nothing here physically moves. Past some flicker rate your visual system stops registering separate blinks and starts reading continuous motion around the ring, the same threshold that lets a reel of still frames read as film.

Concepts: perception, motion.

An interactive you play with one thumb, on Wundr.