Comment: That doesn't answer the question

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That doesn't answer the question

If a politician and a rock both fell off a cliff, they'd both hit the ground at the same time. That doesn't mean that rocks and politicians ... wait, let me rephrase.

Yes, everything of non-zero mass in the universe is affected by gravity. That doesn't help your argument in any way.

No individual has supernatural powers (although "divine right" isn't about supernatural powers, it's about rights granted by God isn't it?). And I suppose if natural rights were from god, then if god wanted to grant some greater rights to certain individuals that would be god's prerogative. Natural philosophy doesn't so much show that there's no such thing as divine right, as assume that there's not, by assuming that there's a natural order in the world that we can study and understand.

But I'm not arguing in favor of divine right, so I'll stipulate that we've ruled that one out. Hardly anyone believes in it anymore anyway, outside of North Korea.

Divine right is, however, just one of many, many ways that societies through the ages (and currently) have identified some human individuals as having lesser rights than others. Ruling out one of those ways doesn't eliminate any of the others. It barely scratches the surface.

From a scientific point of view there are many, many differences between human individuals that are highly relevant in nature, i.e., highly relevant to the things that matter in a natural state, such as survival, reproduction, etc. So I don't see in what sense you are trying to say that science shows humans are all equal "before nature" without it being a distinction meaningless to a discussion of natural rights, such as the fact that all humans, along with all houses and horses and everything else made of matter, are subject to the pull of gravity.