Get the Summary of Brian Greene's The Hidden Reality in 20 minutes. Please note: This is a summary & not the original book. "The Hidden Reality" by Brian Greene explores the concept of parallel universes and the scientific theories that support their existence. The book delves into the evolution of the definition of "universe," which has expanded from everything in existence to the parts we can observe, and now to the idea of multiverses. Greene examines the contributions of quantum mechanics, cosmology, and string theory to the multiverse hypothesis. Quantum mechanics introduces the Many Worlds interpretation, suggesting every possible event occurs in separate universes...