I think this is quite a good definition. After all, it's a key principle of toxicology - courtesy of Paracelsus - that the dose makes the poison. (Any woman who

I think this is quite a good definition. After all, it's a key principle of toxicology - courtesy of Paracelsus - that the dose makes the poison. (Any woman who's had Botox can attest to this.) It certainly seems to be used that way in this article, in being applied to 'positivity'.