A Philosophical Evaluation of Quantum Mechanics and the Measurement Problem

For over a century, scientists have been fascinated by the strange behaviour of matter at the quantum level, where particles can exist in many states at once and affect each other instantly across distances. This paper explores this realm of quantum mechanics by focusing on wave–particle duality, superposition, entanglement and the measurement problem. It shows how these concepts defy the foundations of clas-sical physics to challenge assumptions about determinism, locality, interconnection and objectivity. The paper maintains that although quantum theory works remarkably well, we lack a clear account of what kind of reality it describes, as major interpretations such as Copenhagen, Many-Worlds and objective collapse still struggle to match quantum theory’s success with a clear picture of reality. yet as its major interpretations offer com-peting and unresolved pictures of the world. Schrödinger’s cat illustrates this tension to showcase how macroscopic systems can expose the limits of observation and the line be-tween classical and quantum worlds. The paper concludes that these quantum principles are underpinned by both technical and philosophical challenges and they force us to re-think causality and the role of the observer in explaining reality.