I'm having a really hard time understanding a concept discussed in “Qualia and Analytic Conditionals” by Braddon-Mitchell and "Why We Need A-Intensions" by Jackson. Here's my extraction of these concepts:
- "I call the set of worlds w such that S is true at w under the supposition that w is actual, the A-intension of S." These deliver representational content.
- I use C-intension for the set of worlds w such that S is true at w – 'C' because all but one of these worlds will be counterfactual." The only difference is that C-intensions include counterfactual worlds or possible worlds, yes?
- "For some sentences, their A-intension is one and the same as their C-intension. Examples are: “There are electrons” and “Some things are square." For them, truth at a world and truth at a world under the supposition it is the actual world are one and the same. "The only difference is that the value at every world but one depends in part or in whole on how things are at another world."
I'm not sure what this means, and the language in these papers is really difficult to understand. Does anyone have a good grasp of the concepts? Could you explain the distinction in relatively simple terms?