Life is often framed in classical terms — cells dividing, enzymes catalyzing, signals firing — yet all of it rests on quantum ground. The question is whether evolution has merely coexisted with quantum laws or mastered them. Evidence suggests the latter: DNA protons tunnel between bases, photosynthetic pigments channel energy through fleeting coherence, birds navigate by entangled electron spins, enzymes exploit tunneling to accelerate reactions, and even engineered fluorescent proteins behave as qubits inside living cells. But the question is not only biological. To ask how quantum is life is to confront the oldest philosophical problem of how the possible becomes the actual. From Plato’s shadows to Kant’s forms of intuition, we have wrestled with the same mystery: does reality choose itself, or do we shape it?
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