Despite being the most successful framework in modern physics, quantum mechanics leaves many fundamental questions unanswered. While it reliably explains complex phenomena ranging from lasers to the Higgs boson, physicists lack a consensus on why its descriptions differ from our observations. Originating from the early 20th century work of Planck and Einstein, and later formalized by Heisenberg and Schrödinger, quantum mechanics marks its centennial in 2025. This anniversary acknowledges its remarkable practical achievements while emphasizing the necessity of addressing its unresolved conceptual issues.
Quantum mechanics is a beautiful castle, and it would be unwise to dismiss the cracks in its foundation.
Physicists don't know why quantum mechanics works; it describes systems differently than we perceive them.
The singular feature of quantum theory is that the description of physical systems differs from our observations, raising deep questions.
Commemorating quantum theory's centenary invites us to celebrate its successes while confronting its underlying mysteries.
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