A clockmaker built a device where the hands never moved but still told correct time. How was this possible?

Category: Story · Difficulty: hard

Hint: Think about alternative ways to show time without movement.

Answer

Lights illuminated digits sequentially

The device used lights that lit up in order to indicate time, eliminating the need for moving hands.

This is a hard story riddle — a tricky one that takes a little thought. The answer is Lights illuminated digits sequentially.