Recently I have noticed a few suggested edits that included adding new information to an existing answer. Is that acceptable?
My intuition is that edits should not add new information that the author did not include -- because it may compromise the responsibility and trustworthiness. E.g. if a nonsensical edit is suggested and somehow passes the review, it will look as if the original answerer had this bad idea, while it actually belongs to the editor of the answer. I think that in such situations, a new answer should be posted instead, or perhaps a comment under the existing answer prompting the original answerer to update his answer accordingly (so that the original answerer can decide on it himself/herself).