more from Gabriel M.A. Segal

Single Idea 3105

[catalogued under 10. Modality / A. Necessity / 5. Metaphysical Necessity]

Full Idea

It is metaphysically necessary that Hesperus is Phosphorus, but not logically necessary, since logical deduction could not reveal its truth, and it is not epistemologically necessary, as the ancient Greeks didn't know the identity. (Natural necessity?)

Gist of Idea

Is 'Hesperus = Phosphorus' metaphysically necessary, but not logically or epistemologically necessary?


Gabriel M.A. Segal (A Slim Book about Narrow Content [2000], 1.6)

Book Reference

Segal,Gabriel M.A.: 'A Slim Book about Narrow Content' [MIT 2000], p.14