Which is also why I am more confident on my considered oldest retained memory being real, as it was a rather ordinary event that nobody else remembered. Other "memories" I have from when around 3 I don't really trust as they have been replayed by others too many times.
Of course, maybe I just remember the memory me replaying the memory to myself. Is there a meaningful difference even? Maybe all our memories after some time become blended with our re-narrating them and re-interpreting them.