I can provide you with information on David Deutsch's perspective and the concept of the Many-Worlds Interpretation (MWI) of quantum mechanics.
David Deutsch is a prominent physicist and proponent of the MWI. According to the MWI, quantum mechanics implies that every possible outcome of a quantum event actually happens, leading to the existence of multiple parallel universes or "worlds." In this interpretation, the wave function, which describes the probabilistic nature of quantum systems, never collapses but rather continues to evolve, branching into different universes for each possible outcome.
Deutsch argues that the MWI is the most coherent and comprehensive explanation of quantum mechanics. He suggests that upcoming advances in quantum computing could potentially provide empirical evidence supporting the MWI. Quantum computers utilize the principles of quantum mechanics to perform computations, and according to Deutsch, their functioning relies on the existence of parallel universes.
It's important to note that the MWI is just one of many interpretations of quantum mechanics, and there is ongoing debate among physicists about which interpretation is most accurate. Other interpretations, such as the Copenhagen interpretation or the pilot wave theory, offer different perspectives on the nature of quantum mechanics.
While the MWI has its supporters and provides an intriguing framework for understanding quantum phenomena, it is still a matter of scientific investigation and discussion. Empirical evidence and experimental tests are necessary to confirm or refute any interpretation definitively.