PHIL 1200H Lecture Notes - Lecture 17: Exclusive Or, Minnie Mouse, Quicktime

• School: Trent University
• Department: Philosophy
• Course: PHIL 1200H
• Professor: Stoyles Byron

Document Summary

Indicators of negation include: no, not, never, nowhere, nothing, un- T(cid:396)a(cid:374)slated as (cid:858)(cid:374)ot(cid:859), it (cid:374)egates a p(cid:396)opositio(cid:374) Symbolization (is going to be an assertion that a claim is true). g= the sport of golf is expensive. ~ = it(cid:859)s (cid:374)ot the (cid:272)ase that. Double negations (cid:862)its (cid:374)ot the (cid:272)ase that its (cid:374)ot the (cid:272)ase that x(cid:863)= x. it is t(cid:396)ue. Negating a proposition that is already negative results in affirming the proposition. Example: it is not the case that the sport of golf is not expensive. Symbolization: g= that sport of golf is expensive. Notice: we should avoid confusing ordinary misuses of negatives with genuine double negatives. E(cid:454)a(cid:373)ple: (cid:862)i do(cid:374)(cid:859)t (cid:374)eed (cid:374)o help(cid:863) (cid:862)i ai(cid:374)t got (cid:374)o(cid:374)e(cid:863) X & y says both x and y are true. Each proposition in a conjunction is called a conjunct. E(cid:454)a(cid:373)ple: (cid:862)s(cid:373)ith is (cid:396)i(cid:272)h although (cid:271)ei(cid:374)g (cid:396)i(cid:272)h (cid:449)ill (cid:374)ot (cid:373)ake hi(cid:373) happ(cid:455)(cid:863) r= smith is rich.