The small incident you remember vividly may not appear in anyone else’s account of the day.

Everybody leaves an occasion with a different day. A remark that stayed with you for a decade may have been forgotten within the hour by the person who made it, and the thing they still recall about that afternoon may not have registered with you at all. There is no shared version anywhere; there are only the separate ones.

If something from a long time ago is still with you, consider mentioning it to the person involved. They may have no memory of it, and hearing what it meant is usually a gift rather than a burden.