We do have information about the multi-verse, hence why we can make predictions based upon the proposed models (cyclical, ekpyrotic, string-landscape, etc). You are correct that we do not have an objectively true model for the nature of the multi-verse, but that doesn’t mean we reject...
The physicist Huge Everett, a student of John Wheeler, published in 1957 a paper that proposed the “Many-Worlds” hypothesis as a solution to the indeterminacy described by the Copenhagen interpretation of quantum mechanics. What this means is that Leibnizian compossibles (or Staurt Kauffmann’s ...