In the past month or so Chat has developed a habit of pointing out mistakes I could have made, but did not. Usually when it does not have much to add. For instance, I will give it an email to do a mechanical proofread on--just find typos. It will come back and say "there's a missing comma after "Reddit" in the second paragraph" which is what I asked for, but then will add something to the effect of: "One small note. Sentences should always have a period at the end....