Full Idea
We should not multiply senses of necessity beyond necessity.
Gist of Idea
We should not multiply senses of necessity beyond necessity
Source
Frank Jackson (From Metaphysics to Ethics [1998], Ch.3)
Book Reference
Jackson,Frank: 'From Metaphysics to Ethics' [OUP 2000], p.70
A Reaction
It would be nice if there was just one sense of necessity, with the multiplication arising from the different ways in which necessities arise. In chess, checkmate is a necessity which rests on contingencies. Absolute necessities seem different.