- Your result is wrong.
- Your result is right, but it is trivial.
- Your result is implicitly known to everyone in the field.
- Your result has been well known for many decades.
- Profs. XYZ had that idea many years ago.
- I had that idea many years ago.
- You might be on to something.
PS: I could have had this series of responses wrong–I don’t remember how it went exactly. Let me know if I got it wrong.