I sent a class-wide email with this information earlier, but I wanted to make it available on the class website too…

Two clarificatory notes about your homework assignment for tomorrow (Thursday, 10/22):

1.  In the Filtering conditions provided on page 2 of the assignment, S stands for complex sentences of
the form ‘If A, then B’ and ‘A and B’:

(i)  If A presupposes P, then ‘if A, then B’ and ‘A and B’ also presuppose P.
(ii)  If B presupposes P, then ‘if A, then B’ and ‘A and B’ also presuppose P unless A = P.

2.  In Section III, “Another Revision of the Filtering Conditions”, focus your attention on Part B.  That is, I
am most interested in knowing whether (10) presuppose (8f), and whether this presupposition is
affected by our background knowledge about John McCain.  In Part C, you should certainly state
whether your revised filtering conditions from Section II correctly predict the facts about (10), and you
should certainly attempt to revise them if they don’t.  But this revision is much trickier than the one I’ve
asked for in Section II, and so will be graded accordingly.