IPS policy regarding comments strictly discards everything that is not either asking for clarification or suggesting improvements. Those comments that do not respect these guidelines - I'll call them "invalid comments" for the rest of the post - are destined to be deleted sooner or later.
There are some cases in which there are valid comments under a post, yet no edit was intended since they were posted. The thing that's bothering me with this situation is that I usually think the post in question would benefit from an edit addressing the issues raised in such comments but for one reason or another, the post remained as is.
I don't like unnecessary content and I'd be tempted to flag those valid comments as they're so old I'm unsure they're any useful anymore (in the sense that no one is likely to edit the post to address those issues). I thought we could maybe write a new comment to "ping" the author, as a gentle reminder:
"Hey, there are questions remaining unanswered regarding your post. Would you mind having a look?"
but this would mean we need to agree on the sufficient duration after when one could write such a reminder.
How should we handle old posts where there are valid comments underneath, which issues were never addressed by editing?