Users with less than 50 reputation points cannot write comments on questions and answers that they don't own.
- Why does this limit exist?
- But I want to contribute now. What should I do instead?
- But I can't write a good answer without more information!
- Shouldn't I be allowed to post comments if I have reputation on a different site?
- But I saw a new user posting a comment! How did they do it?
- Why do I need 50 reputation to comment on my own post?
See also:
- How do comments work?
- Comment Everywhere privilege in the Help Center
Markdown link:
[Why do I need 50 reputation to comment? What can I do instead?](https://meta.stackexchange.com/q/214173)