Moral philosophy reposes on natural law precepts as common presuppositions, but its advice will be true only in the main.
In Stalnaker's scheme, context is basically subjective: a matter of common ground: that is, shared beliefs that serve as common presuppositions for the interpretation of assertions.
Given O'Leary's and Daniels' common presuppositions about what the two names represent, Daniels' assertion also expresses the proposition that the man to whom O'Leary has just been introduced is the author of 'Direction of Fit'.
Stalnaker calls the set of presuppositions that conversational partners treat as common knowledge that they can rely on to get their point across the "context set"—which he models as the set of possible worlds that satisfy all of these mutual presuppositions.
On Certainty tackles skeptical doubts and foundational solutions but is, in typical Wittgensteinian fashion, a work of therapy which discounts presuppositions common to both.
The methods that existentialists employ in their interpretations have a presupposition in common: the immediacy of the relationship between the interpreter and the interpreted, between the interrogator and the interrogated, between the problem of being and Being itself.
Jokes, even if they are meant to be shared against a background of common cultural and linguistic presuppositions, are the sites of friction: herein lies their affinity to the situations of crisis.
But in the actual situation, the actual world is not part of my presuppositions, my common ground.
Non-naturalism's opponents, by contrast, put a great deal of weight on explaining our moral practices in a way that fits well with a properly scientific view of the world and are happy to reject the presuppositions of common sense if they conflict with that conception.
And the Warren Court's decisions were consistent with the presuppositions of a common law system: that judges should build on previous decisions rather than claiming superior insight, and that innovation should be justified on the basis of what has gone before.
