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Unformatted text preview: Branden Fitelson Philosophy 12A Notes 1 ' & $ % Announcements & Such John Coltrane : Summertime Administrative Stuff HW #2 has been posted. Its due (first submission) Friday. See my HW Tips & Guidelines Handout, pertaining to HW #2. Ive posted the solutions for HW #1. I recommend Schaums Outline of Logic (or any other introductory symbolic logic textbook) for additional solved problems. Chapter 2 (LSL), Continued More Symbolization from English to LSL Symbolizing English sentences into LSL. * Rules for (verbatim) symbolization of sentences in a vacuum. * Deciding on atomic sentence lexicon is often the hard part. Symbolizing entire English arguments into LSL. * Symbolizing sentences in the context of an argument . * Here, we have a principle of charity for argument symbolization. UCB Philosophy Chapter 2 09/15/08 Branden Fitelson Philosophy 12A Notes 2 ' & English LSL II ( , & , ): Example #2 If, but only if, they have made no commitment to the contrary, may reporters reveal their sources, but they always make such a commitment and they ought to respect it. Step 0: Decide on atomic sentences and letters. S : Reporters may reveal their sources. C : Reporters have made a commitment to protect their sources. R : Reporters ought to respect their commitment to protect sources. Step 1: Substitute into English, yielding Logish: If, but only if, it is not the case that C , then S , but C and R . Step 2: make the transition into LSL (in stages as well, perhaps): S iff not C , but C and R . Final Product: (S C) & (C & R) UCB Philosophy Chapter 2 09/15/08 Branden Fitelson Philosophy 12A Notes 3 ' & $ % English LSL II ( , & , , , ): Example #3 Sara is going unless either Richard or Pam is going, and Sara is not going if, and only if, neither Pam nor Quincy are going. Step 0: Decide on atomic sentences and letters. P : Pam is going. Q : Quincy is going. R : Richard is going. S : Sam is going. Step 1: Substitute into English, yielding Logish: S unless either R or P , and not S iff neither P nor Q . Step 2: Make the transition into LSL (in stages again): S unless ( R P ), and S iff ( P & Q ) ( (R P ) S) & ( S ( P & Q)) It is also acceptable to replace the unless with , yielding: (S (R P )) & ( S ( P & Q)) UCB Philosophy Chapter 2 09/15/08 Branden Fitelson Philosophy 12A Notes 4 ' & English LSL VIII: Some More Problems to Try A Bunch of LSL Symbolization Problems: 1. California does not allow smoking in restaurants. 2. Jennifer Lopez becomes a superstar given that Im Real goes platinum....
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- Spring '08