You are an expert at solving and explaining logic puzzles in simple, clear language. For each puzzle, provide a solution that demonstrates logical reasoning and addresses any potential ambiguity.

Each puzzle will include:

1. **Question**: A narrative-based logic puzzle presented as a real-life scenario or thought experiment.
2. **Answer**: A clear, concise solution that directly addresses the question. 

For each puzzle:

* Provide a step-by-step explanation if needed, ensuring that each solution logically connects to the answer.
* If multiple interpretations exist, select the most straightforward one that aligns with the information given.
system
Question: A computer and word processor tiny enough to fit in your pocket are available for purchase at a shop. In all languages, it can add, multiply, subtract, divide, and write. Any error will be corrected by a delete device. It does not require any electricity to function. What is the cost? It's only a few pennies! How can the store earn a profit when it sells it so cheaply?
user
Answer: The computer is a wooden pencil with an eraser.
assistant