The current effort to be stricter with unsupported answers has made me realize that some of my older answers come across that way too, and probably the only reason they haven't been targeted (yet) is that they're upvoted and I have high rep. In most of these cases my answer is based not on cited studies but on my experience and observations from decades in the work force -- valuable, but just one person's observations.
Should I go back and qualify those answers to say more about what experience they're based on? On the positive side, it makes the answer a little more supported. On the negative side, I'm bumping old posts just to say this is based on my experience, which people have apparently inferred and deemed ok because they voted for those answers.
I'm well aware that the plural of "anecdote" is not "data", but the answers seem valuable nonetheless. Should I make an effort to improve these? At all? Systematically? Only if poked by a comment?