Logical Reasoning

PT149 · S1 · Q25 Any popular television series

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Any popular television series that is groundbreaking is critically acclaimed.

Evidence

(conditional: all) Popular television series and groundbreaking → critically acclaimed

(fact: not all A's are B = some A's are ~B) Some popular television series are not critically acclaimed

Conclusion

Some popular television series are not groundbreaking

Evaluate

This is a valid argument. Since there is a conditional and some quantifiers (not all / some) and some repeating ideas (groundbreaking / popular television series / critically acclaimed), we probably want to diagram this.

Any A that is B is C. A and B → C Not all A's are C. Some A's are ~C So, Not all A's are B Some A's are ~B

Goal

The number one thing to look for is a conditional that has an “and” or a qualifier “Any A that is B”.

If we find it, the conclusion should be saying “Not all A are B”.

25.

The pattern of reasoning in the argument above is most similar to that in which one of the following arguments?

  1. If articles use specialized technical

    Bad Conclusion Match

    We see a conditional that could be thought of as Article and Use Specialized Term → Is the conclusion saying “not all articles use specialized terms”? No, the conclusion is a conditional and it uses a new term like “academic works”. Original Argument This Answer Premise 1: A and B → C A and B → ~C Premise 2: Not all A's are C. D → B Conclusion: Not all A's are B. D → ~C

    5% picked this

  2. Professor Attah gives students high

    Bad Premise Match

    The conditional here doesn't seem to have a trigger that could be split into two things. Thinks Improved → gives high grades There's no way to replicate the argument structure without two ideas in the trigger. Original Argument This Answer Premise 1: A and B → C A → B Premise 2: Not all A's are C. Some A. Conclusion: Not all A's are B. Some B.

    3% picked this

  3. Correct

    If a biography is unbiased,

    Why this is right

    The conditional here could be split into a two thing trigger: Bio and Unbiased → Embarrassing Facts The conclusion would have to be “Not all bio are unbiased” or “Some bio are biased”, and it is! Okay, let's verify the other premise. Does it say “not all biographies contain embarrassing facts?” Yes. Original Argument This Answer Premise 1: A and B → C B and U → CEF Premise 2: Not all A's are C. Not all B is CEF. Conclusion: Not all A's are B. Not all B are U.

    Skill tested: Parallel · how this choice captures the argument's function is the move to repeat next time.

    75% picked this

  4. Mr. Schwartz is polite to

    Bad Premise Match

    The conditional here doesn't seem to have a trigger that could be split into two things. Polite to Mr. Schwartz → Mr. Schwartz Polite to Them There's no way to replicate the argument structure without two ideas in the trigger. Original Argument This Answer Premise 1: A and B → C A → B Premise 2: Not all A's are C. All C's are A. Conclusion: Not all A's are B. All C's are B.

    3% picked this

  5. If a book is worth

    Reversed Premise/Conclusion Match

    The conditional here could be split into a two thing trigger: Book and Worth Reading → Worth Buying The conclusion would have to be “Not all books are worth reading” or “Some books are not worth reading”, but that shows up as a premise instead. The conclusion involves the right side of the conditional, “worth buying”. Original Argument This Answer Premise 1: A and B → C B and WR → WB Premise 2: Not all A's are C. Not all B are WR. Conclusion: Not all A's are B. Not all B are WB.

    14% picked this

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