I'm told it's arguable that when people say, "Water is H20", what they mean is,

I'm told it's arguable that when people say, "Water is H20", what they mean is,

I'm told it's arguable that when people say, "Water is H20", what they mean is, "The stuff from around here that we call water has the molecular structure H2O." Well, what about ethical claims? When people say "Killing is wrong", do they really mean "Killing is wrong in all circumstances, times and places"? Or are they saying something more like, "According to the normal values from around here, killing is wrong"?

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