> ...if gravity is quantum...
replyYou don't need evidence to support a premise.
Their point is measuring gravity's influence on a single particle is not necessarily evidence of the existence of the graviton.
replyNobody's claiming it is.
replyActually, we do need evidence for premises which are not definitions or basic assumptions (axioms). Graviton is still a hypothetical particle and falls under neither of two categories - Definitions or axioms.
replyThat doesn't stop us from imagining what something could mean in the context of gravitons if evidence of them ever does turn up.
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