1. Use and mention Logic is part of philosophy Logic is a word “Logic” is a word Use There’s glory for you. --what do you mean by “glory”? Mention

2. Arguments and non-arguments

3. 1.Warning or Advice 2.Statement of Opinion or Belief 3. Report 4. Illustration 5.Explanation 6.Explication 7. Conditional

4. You better not come to class late. You really ought to do your homework Warnings tend to be prohibitive in their aim. Advice seems to be constructive, recommending. The difference is not absolute, but can usually be made.

5. Opinions have to do with how one feels about something –subjective. A belief is what one thinks is true about something or other. Ice cream is better than cake Trees are plants The difference is not absolute, but can usually be made

6. illustration  Possible to interpret them as arguments  Ex: Heidegger’s really difficult to understand; my friend’s a good student, and he just got frustrated trying to read Being and Time. Is this giving a reason to believe Heidegger is difficult, or is it giving an example of what it means to claim he’s difficult?

7. Explanation vs Explication  Two senses of “explain”  --to tell why something is or happens as it does  --to make the meaning of something clear The ontological argument is called that because it is about Being

8. Don’t miss class on a day we have a quiz.

9. Studying logic is fun.

10. Studying logic is like studying a foreign language in some ways.

11. A statement is the meaning of a declarative sentence.

12. An argument is a series of statements. Being a series, it contains at least two. A statement is a sentence that can be either true or false. The statement that claims to follow from the others is the conclusion; the others are the premisses.

13. Every argument has a conclusion and at least one premise. For instance: Socrates is a man, therefore he is mortal.

14. The biggest reason people who don’t do well in Logic don’t do well is that they don’t keep up with the homework.

15. If you come to class and I’m not here, you’ll expect an explanation and an apology. Likewise, if I come to class and you aren’t here, I’ll expect an explanation and apology.

16. If you arrive late, you should come in anyway.

17. But don’t arrive late!

18. You should really get your taxes in on time this year.

19. It’s great that DC got a baseball team, but they aren’t very good.

20. Going to minor league baseball is great because it’s closer than DC, it’s cheaper, and the players are almost as good

21. Minor league players make less than major league players because they are in the minors.

22. We should buy Giant brand because it’s cheaper than Thomas’.

23. If there were gas in the car, it would start. But it won’t, so there mustn’t be.

24. Joe’s absent because he broke his leg last night.

25. They may as well abolish Labor Day. You’re supposed to get the day off on national holidays.

26. It’s really humid today.

27. It’s really unpleasant today.

28. If there’s gas in the tank, the car will run. If the car runs, there is gas in the tank.

29. Antecendent: the “if” clause Consequent: the “then” clause

30. The antecedent expresses a sufficient condition. The consequent expresses a necessary condition.