Week 13 Flashcards
how do we model presuppositions?
- Common Ground
- Context Set
- Stalnaker, Heim…
common ground (CG)
• the set of propositions which the participants in a conversation agree to be uncontroversial for the purposes of this conversation
context set (C)
• the set of possible worlds in which every proposition in the Common Ground is true
example…
• CG = {the proposition that it is sunny, the proposition that we have a semantics class, the proposition that the spring is coming}
…continued
• C =
{the set of worlds in which it is sunny and we have a semantics class and the spring is coming} • conjunction -> intersection
example Fred bit Mary and Bruno bit Mary too • step 1: • step 2: • step 3:
- some C
- C ⋂ “Fred bit Mary”
- C ⋂ “Fred bit Mary” ⋂ “Bruno bit Mary too”
Context change potential.
For any Context Set C and simple sentence, write equation:
S, C + S = C ⋂ [S]
presupposition projection
• if the context satisfies the presupposition, proposition is added
• “satisfies” = ____, _____ or at least does not ____
contains, entails or at least does not contradict
when we cancel a presupposition, we remove it from __
C
if we accommodate a presupposition we add it to ___
C
focus
- new information
- correcting/verifying information
- may be marked by intonation
Bruno ate an appleF too. • This sentence presupposes that: • A: someone else ate an apple • B: Bruno did something else with an apple • C: Bruno ate something else • D: there is no presupposition
C
focus regulates presupposition
BrunoF ate an apple too. ->
Bruno ateF an apple too. ->
Bruno ate an appleF too. ->
- someone else ate an apple
- Bruno did something else to an apple
- Bruno ate something else
- without ___ there is no presuppositional requirement
* without a presuppositional requirement we don’t know how to restrict the ___
focus, alternatives
Does focus change truth conditions of an utterance?
Yes
What are speech acts:
- propositions that, when uttered, allow us to perform a particular kind of action or the proposition itself performs the action
- performative act