Often I come across phrases like "We believe theorem $X$ is of independent interest"... I know this a phrase specific to math since I can google the phrase "of independent interest" and get mostly math papers.
I think this phrase is rather strange since it leaves out who it might be interesting to or why. Or maybe it is self-evident. Finally, when is it okay to include such a result?
I can provide specific examples if necessary, but it doesn't take long to stumble across in one's own reading.