Try another version of the endless introduction

Original creative challenge · Things we can finish

1. Use this invented starting situation: An introduction keeps expanding because its purpose is unclear.
2. Define the question it must help the reader enter.
3. Make a small artefact that shows the change: a note, sketch, caption, or three-panel sequence.
4. Write one sentence describing what the artefact makes clearer. Keep this an experiment; no account, purchase, or public post is needed.