Weighing mainstream and alternative accounts…
Two lenses on the same evidence. Source weight and the primary source ratio show what each rests on.
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Investigated
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Yes in principle: spin–motion coupling can separate a levitated diamond’s positions and provide a route to macroscopic superposition experiments. But the reported 128-mg result demonstrates controlled, coherent motion—not yet a measured spatial superposition; interference, coherence, and exclusion of classical explanations would still be needed.
Two lenses on the same evidence. Source weight and the primary source ratio show what each rests on.
Lens adapted to this topic: What the demonstration does not establish
A cautious reading separates quantum control of an internal spin from proof of a quantum superposition of the whole diamond. Periodic optical initialization can generate a reproducible force and coherent classical motion, but the cited results do not report interference between spatial branches, a superposition witness, or a direct demonstration that the macroscopic object remained coherent across the separation. The experiment therefore supports feasibility, not a completed observation.
Deeper threads worth pulling on next.