Most of us know this:
- How to deal with constant changing questions
- Etiquette for Russian Doll Questions
- Exit strategies for "chameleon questions"
- Dealing with solutions that end with a new error
Why I should not change an answered question.
Question on this site are not only for short-term solutions to your problem but also to provide answers for other users in the future who face the same or similar questions. To achieve this it is important to keep questions and answers in sync which each other and focused on specific issues.
You can always edit a question to add more information and clarify it. But after an answer adresses your question you should not change the meaning of it. Instead ask a new question for the new topic or issue (and link to the previous question for context if it makes sense).
Please feel free to contribute to the proposed text in the community wiki answer below, I am not much of a writer.