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Phil 148

Phil 148. Chapter 5 Stuff to include in and leave out of the standard form argument. Tangents. Not all statements a person makes in the course of an argument are necessary for stating their argument. Many claims are related but are tangential.

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Phil 148

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  1. Phil 148 Chapter 5 Stuff to include in and leave out of the standard form argument

  2. Tangents • Not all statements a person makes in the course of an argument are necessary for stating their argument. • Many claims are related but are tangential. • It is not necessary to put these claims in the standard form argument

  3. Repetition • Whether from awkwardness or rhetorical purpose, repeating the same idea several times in the course of an argument does not add anything to the standard form argument.

  4. Make terms consistent • Say someone discusses “economic troubles”, “financial hardships”, a “credit crisis”, “poor stock market performance”, etc. all in the same article but at different points. • People often use synonymous words or phrases just for variety. When they do this, it is okay to condense them to make the standard form argument look neater • Sometimes, however, authors use similar but distinct language to be precise.

  5. Condensing: Main argument: Cleaned up: P1. Deficit spending has caused bad economic performance P2. Bad economic performance will cause additional deficit spending C. If deficit spending continues, then bad economic performance will result. P1. Spendthrift government policy has led to a credit crisis. P2. Bad economic performance always generates more government spending.C. If the cycle isn’t broken, then financial hardship will continue.

  6. Example (claims that work together): • (1) Bill is a student at Yale. (2) No student at Yale has won the Nobel Prize. (3) Therefore, Bill has not won the Nobel Prize. 1 + 2 3

  7. Example (independent claims): • (1) The president is soft on the environment. (2) He has weakened clean-air regulations (3) and lifted restrictions on logging in the West. 2 3 1

  8. Example: (complex arguments) • Conclusion: (3) The idea that God is required to be the enforcer of the moral law is not plausible. Premises: (4) In the first place, as an empirical hypothesis about the psychology of human beings, it is questionable. (5) There is no unambiguous evidence that theists are more moral than nontheists. (6) Not only have psychological studies failed to find a significant correlation between frequency of religious worship and moral conduct, but convicted criminals are much more likely to be theists than atheists. (7) Second, the threat of divine punishment cannot impose a moral obligation. (8) Might does not make right.

  9. Chapter 5 Exercise 2 #4 Mercury is known to be the only metal that is liquid at room temperature, so a pound of mercury would be liquid in this room, which is at room temperature, and it would also conduct electricity, since all metals do. Therefore, some liquids do conduct electricity.

  10. Chapter 5 Exercise 2 #4 Mercury is known to be the only metal that is liquid at room temperature, so a pound of mercury would be liquid in this room, which is at room temperature, and it would also conduct electricity, since all metals do. Therefore, some liquids do conduct electricity. -Argument markers

  11. Chapter 5 Exercise 2 #4 Mercury is known to be the only metal that is liquid at room temperature, so a pound of mercury would be liquid in this room, which is at room temperature, and it would also conduct electricity, since all metals do. C: Some liquids do conduct electricity. -Main conclusion

  12. Chapter 5 Exercise 2 #4 P1: Mercury is known to be the only metal that is liquid at room temperature. P2: This room is at room temperature C1: A pound of mercury would be liquid in this room, and it would also conduct electricity, since all metals do. C: Some liquids do conduct electricity. -first subargument

  13. Chapter 5 Exercise 2 #4 P1: Mercury is known to be the only metal that is liquid at room temperature. P2: This room is at room temperature C1: A pound of mercury would be liquid in this room, P3: All metals conduct electricity. P4: A pound of mercury would conduct electricity. C: Some liquids do conduct electricity. -second subargument

  14. Chapter 5 Exercise 2 #4 P1: Mercury is known to be the only metal that is liquid at room temperature. P2: This room is at room temperature C1: A pound of mercury would be liquid in this room, P3: All metals conduct electricity. P4: A pound of mercury would conduct electricity. C: Some liquids do conduct electricity. -we’ll now number the statements for diagramming

  15. Chapter 5 Exercise 2 #4 1: Mercury is known to be the only metal that is liquid at room temperature. 2: This room is at room temperature 3: A pound of mercury would be liquid in this room, 4: All metals conduct electricity. 5: A pound of mercury would conduct electricity. 6: Some liquids do conduct electricity. -we’ll now number the statements for diagramming

  16. 1: Mercury is known to be the only metal that is liquid at room temperature. 2: This room is at room temperature 3: A pound of mercury would be liquid in this room, 4: All metals conduct electricity. 5: A pound of mercury would conduct electricity. 6: Some liquids do conduct electricity. Main conclusion: (at bottom) 6

  17. 1: Mercury is known to be the only metal that is liquid at room temperature. 2: This room is at room temperature 3: A pound of mercury would be liquid in this room, 4: All metals conduct electricity. 5: A pound of mercury would conduct electricity. 6: Some liquids do conduct electricity. Since 3, 4 and 5 are all required to work together to support 6, these look like: + 4 + 3 5 6

  18. 1: Mercury is known to be the only metal that is liquid at room temperature. 2: This room is at room temperature 3: A pound of mercury would be liquid in this room, 4: All metals conduct electricity. 5: A pound of mercury would conduct electricity. 6: Some liquids do conduct electricity. Since 1 and 2 work together to support 3, these look like: 2 1 + + 4 + 3 5 6

  19. Phil 148 Chapter 5 Stuff to include in and leave out of the standard form argument

  20. Unstated premises: • Sometimes an argument can appear to have only one premise. This is what happens when the person supplying the argument assumes some fact that is (usually) too obvious to be stated directly. • There is usually nothing wrong with this, but in this course we will make a habit of filling in unstated premises.

  21. Kinds of Suppressed Premises: • Factual: facts that are left unstated because they are assumed to be common knowledge. • Linguistic: these are facts about how certain words and concepts relate to one another that are left unstated because it is assumed that any competent user of the language is aware of them. • Evaluative: these are phrases that imply a value judgment without directly stating that value judgment.

  22. Example • The news media are not in the business of endorsing or validating lifestyles. • C. The media should not endorse lifestyles. • This argument is missing the claim that people should not do what they are not in the business of doing. [unstated evaluative premise]

  23. Example (continued) • News media abandons its objectivity when it endorses lifestyles. • C. News media should not endorse lifestyles. • This argument is missing the claim that the news media should not abandon its objectivity.

  24. Example (continued) • Endorsing lifestyles means the news media destroys what respect people have for it. • C. The news media should not endorse lifestyles. • Can you spot the unstated premise?

  25. A common argument structure: • Statement of a particular state of affairs • Normative principle (contains the word ‘should’, ‘ought’, ‘must’, etc.) • C. Connects the two statements in a logical way • Example: • The new construction proposal would break the state budget • The state should not break its budget • C. The state should reject the new construction proposal.

  26. Ch. 5, Ex. 6 • 1. Britney Spears is under age thirty-five. Therefore, she cannot run for president of the United States. • P1 Britney Spears is under age thirty-five. • P2 • C She cannot run for president of the United States.

  27. Ch. 5, Ex. 6 • 1. Britney Spears is under age thirty-five. Therefore, she cannot run for president of the United States. • P1 Britney Spears is under age thirty-five. • P2 Nobody under age thirty-five can run for president of the united states. [contingent fact] • C She cannot run for president of the United States.

  28. Ch. 5, Ex. 6 • 3. 81 is not a prime number because 81 is divisible by 3 • P1 81 is divisible by 3 • P2 • C 81 is not a prime number

  29. Ch. 5, Ex. 6 • 3. 81 is not a prime number because 81 is divisible by 3 • P1 81 is divisible by 3 • P2 Prime numbers are divisible only by 1 and themselves. [Linguistic: The thing doing the work here is the meaning of the term ‘prime number’] • C 81 is not a prime number

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