Full Idea
Strictly speaking, the distinction between two brands of necessity is one of grounds, rather than modality.
Gist of Idea
Necessities are distinguished by their grounds, not their different modalities
Source
Brian Ellis (Scientific Essentialism [2001], 1.06)
Book Reference
Ellis,Brian: 'Scientific Essentialism' [CUP 2007], p.33
A Reaction
This idea I associate with Kit Fine. I like it, because it allows 'necessity' to be a univocal concept, which seems right to me. The types of necessity arise from types of things which already occur in our ontology.
Related Idea
Idea 9216 Each area of enquiry, and its source, has its own distinctive type of necessity [Fine,K]