I can tell you what I think but you won't believe it
Which is OK.
I think we sometimes have "sight" into other existences that are going on at the same time in some other "time." All of our lives, past, present and future, are like little bubbles floating and sometimes they rub up against one another and we see into the other one. We are still the same entity just in a different reality.
I've actually seen a door open into another reality. I've experienced things that were so real, I couldn't believe they weren't. And they weren't dreams. In dreams there's always something out of place. Not so with these.
So that's my 2 cents. Explore it or not. Your choice.
