Shorten the Test | Demon Daily, Ep. 1533

Main Ideas / Lessons Conveyed

• LSAT/logic arguments often have flaws: The speakers emphasize that most LSAT logical reasoning arguments do not successfully prove their conclusions. Therefore, you should assume there’s a hole to exploit unless it’s an explicit exception.
• Universal flaw to look for: Students often incorrectly assume the evidence proves the conclusion when it actually doesn’t.
• Treat answer choices as wrong initially: Don’t read options hoping one will be correct. Expect each option (A–E) to be wrong and focus on identifying why it’s wrong.
• Speed via “shortening the test”: You don’t need to read every word of every wrong answer choice.
  • Experts often stop after half an answer, and sometimes after one word, because early parts reveal mismatch/errors.
  • The race analogy: experts “cut across” rather than run the full track—speed comes from not over-reading.

Methodology / Instructions (Detailed)

1. Understand the argument first

   • Confirm whether the evidence truly proves (or fails to prove) the conclusion.
   • When attacking logical reasoning arguments:
     • If the conclusion is truly supported, accept it.
     • If it isn’t, identify the gap (commonly: the evidence doesn’t actually prove the conclusion).

2. Expect answer choices to be wrong

   • Don’t approach A hoping it’s correct, then B hoping it’s correct, etc.
   • Instead, remember: each answer is likely incorrect, so read with the mindset of finding disqualifying faults.

3. Parallel flaw question: identify the required flaw pattern

   • The “parallel flaw” option must match the structure/pattern of the original flawed reasoning—not just reuse similar keywords.
   • In the demonstrated argument, the flaw involves:
     • Using two “most” premises about a group and a characteristic, then
     • Making a conclusion that unjustifiably links them in a way the premises don’t guarantee.

4. Use shortcuts while reading answer choices

   • Don’t read every word of every wrong option.
   • Look for early disqualifiers, such as:
     • Wrong quantifier type (e.g., needing “most” but encountering “all/anything/must”).
     • Premise/conclusion structure mismatch, for example:
       • Matching “most A …” to “most B …” incorrectly, or
       • Shifting to a totally different group.
     • Missing/incorrect “most” where the flaw pattern requires it.

5. Avoid misreading the question prompt

   • Many mistakes come from misreading what the question asks.

   • Specifically, for:

     “Which of the following contains flawed reasoning that most closely parallels the flawed reasoning in the argument above?”

   • You must match the flawed reasoning pattern, not merely pick an answer that superficially resembles the topic or “flows” from premises to conclusion.

How the Example Problem Is Worked (Key Reasoning)

• Argument premises (about racehorse owners and wealth):

  • “Most people who own racehorses are wealthy.”
  • “Most wealthy people enjoy making public displays of wealth.”
  • Attempted conclusion: Most racehorse owners enjoy making public displays of wealth.

• Why it’s flawed (core objection):

  • Even if most racehorse owners are wealthy, the set of racehorse owners could be:
    • A small subset of wealthy people, and
    • Not representative of how “most wealthy people” behave.
  • Therefore, the premises do not guarantee the conclusion about racehorse owners’ behavior.

• Answer choice evaluation strategy (what the speakers do):

  • A is selected as the closest parallel flaw after checking structure/quantifiers.
  • Other options are eliminated due to:
    • Quantifier problems (e.g., “must,” “all,” or other patterns that may lead to a valid—rather than flawed—structure).
    • Wrong group linkage (the conclusion doesn’t follow the same illicit “most … most … therefore most …” structure).

Speakers / Sources Featured

• Ben Olson (co-founder of elsidemon.com; host)
• Nathan Fox (co-founder of elsidemon.com; host)
• Isaac (viewer/member who submitted the question)