Full Idea
My proposal is that the truth-conditional content of 'green' (in 'two is green') is the property of being green, and its presuppositional content is the property of being coloured.
Gist of Idea
In 'two is green', 'green' has a presupposition of being coloured
Source
Ofra Magidor (Category Mistakes [2013], 5.4.1)
Book Reference
Magidor,Ofra: 'Category Mistakes' [OUP 2013], p.132
A Reaction
This requires a two-dimensional semantics of truth-conditional and presuppositional content. I fear it may have a problem she spotted elsewhere, of overgenerating presuppositions. Eyes are presupposed by 'green'. Ambient light is required.
Related Idea
Idea 18048 A test for presupposition would be if it provoked 'hey wait a minute - I have no idea that....' [Magidor]