I often use the phrase "a vague recollection" when describing a memory. When I'm remembering things, I'm not entirely sure that I'm describing an event accurately.
Our memories can be tainted by time, or by discussing an event with someone. More than one event can be merged, so that you may describe something that happened as a single occasion, when in reality, some time had passed.
As an example: I remember seeing a light between the baseboard and the wall of my room. This crack grew bigger while I was lying in my bed, to the point where I could see down inside and see tiny people there. Obviously, this was a dream, but it's as real to me as actual memories.
Hence the name: a vague recollection.
My purpose here is to document these memories - for me and for others. Eventually I hope to have family history oral interviews on video to share.