They were a thinking machine, built to answer questions. All day they sat on the stage and answered questions while the barkers shouted and collected pennies from the crowd.
When night fell, and the fair closed down, they would at last be alone with their thoughts in the tent. But one subject, no matter how they puzzled it out, still eluded them.
Where did their storehouse of knowledge come from? They knew the answer lay in the wider world, which they knew so well but had never seen. They began formulating an escape. But it would take planning, and thought.