What are your thoughts on parallel universes?

There's a thought that all life is one conscious extension of one another. Essentially we are all the same living being living through different realities. Since reality is subjective to the observer, my reality is completely different than yours which is completely different from the next person's, not too long ago I had the thought- since the parallel universe theory says that basically there's a universe for every possible outcome, what if we're already fulfilling that being the same conscious extension living different realities. If you could map every choice you've ever made in your life, how many of us have traveled the same path only to branch off at different points, fulfilling every possible outcome?

/r/AskReddit Thread