I have these Dreams.
I call them 'life dreams.' In them, I live an entire life of someone else's, not my own. Someone I don't know.
I live it with them, Through them, often from before birtth until late in life, or until after this world's death.
We are dust and memories when it comes to a simplification. We are dust and cellular debris and in this debris is encased at least one short lifetime of the memories that make us Alive.
This is the only explanation I can imagine for these dreams, thus far::