Is there a family or a problem you “solved” a while ago? Have you looked at it since? Is it possible that you were wrong, your research was incomplete, or you were just in “la-la-land” when you reached your conclusion?
Keep in mind that everyone is wrong once in a while. A distant relative made me go back and re-visit some research I did years ago and while I’m not 100% certain what’s “right” yet, there are some holes in what I did.
It doesn’t hurt to occasionally go back and review what you thought was “done.”
My review of my problem will appear in an upcoming issue of Casefile Clues. Bits and pieces of the research may appear as a tip, but the whole thing is far too long for a tip .