Defending Many Worlds via Case Discrimination: An Attempt to Showcase the Conceptual Incoherence of Anti-Realist Interpretations and Relational Quantum Mechanics

In this work, an alternative attempt to motivate the Many-Worlds Interpretation (MWI) is undertaken. The usual way of arguing for MWI mostly revolves around how it might solve measurement problem in a more straightforward and concise manner than rival interpretations. However, here effort made defend indirect manner, namely via repeated case discrimination process ‘conceptual elimination’. That is, will be argued that its major rivals, with Qbism Relational Quantum-Mechanics being among most noteworthy ones, either face conceptual incoherence or conceptually collapse into variant MWI. Finally, hidden-variable theories severe challenges when applied Quantum Field Theory such appropriate modifications may lead back MWI, thereby purportedly leaving as only viable option.