Wave-particle duality does not directly imply the existence of countless different versions of us. It is a concept that describes the dual nature of particles, which can exhibit both wave-like and particle-like properties under certain circumstances.
The idea of countless different versions of us stems from a different concept in quantum mechanics called the Many-Worlds Interpretation (MWI). According to MWI, every quantum event results in the creation of multiple parallel universes, sometimes referred to as "branches" or "parallel worlds." In this interpretation, every possible outcome of a quantum measurement is realized in a separate universe.
However, it is important to note that the Many-Worlds Interpretation is just one of several interpretations of quantum mechanics, and there is ongoing debate and discussion among physicists regarding its validity and implications.
While the Many-Worlds Interpretation allows for the existence of multiple versions of us in different parallel universes, it is a speculative interpretation that goes beyond the empirical evidence of quantum mechanics. It is currently impossible to experimentally verify or directly observe these parallel universes or the existence of other versions of ourselves.
So, while wave-particle duality is a fundamental concept in quantum mechanics, it does not directly lead to the conclusion that there are countless different versions of us. The idea of multiple versions of ourselves arises from specific interpretations of quantum mechanics, such as the Many-Worlds Interpretation, which is not universally accepted.