It was circular and black and about the size of a small side plate. Its top and its bottom were smoothly convex so that it resembled a small lightweight throwing discus.
Its surfaces seemed to be completely smooth, unbroken and featureless.
It was doing nothing.
Then Ford noticed that there was something written on it. Strange. There hadn’t been anything written on it a moment ago and now suddenly there was. There just didn’t seem to have been any observable transition between the two states.
All it said, in small, alarming letters was a single word:
PANIC
A moment ago there hadn’t been any marks or cracks in its surface. Now there were. They were growing.
Panic, the Guide Mk II said.
- “Mostly Harmless” by Douglas Adams.



