Our soul simply has the power to bring about consciously intended goals by interacting within the material forces and elements of this material universe.
How does it interact though?
What are the processes/mechanics of said interactions?
If your response is "don't know" then that leaves your version of reality in the same state as the other version.
In other words, you claim alternate versions to yours cannot be correct because there are currently no definitions for some aspects, yet you would have everyone believe that your version, despite also not having definitions, somehow should be superior!