Thinkers & Big Questions
The philosophers worth knowing and what they actually argued.
Which philosopher wrote "I think, therefore I am"?
Most bad arguments fail in one of a small number of ways, and each way has a name worth knowing.
A fallacy is not simply a claim you disagree with. It is a move in an argument that looks like support but is not, and the useful thing about the named ones is that they recur. Once you can spot a straw man, you notice it several times a week, usually in places that consider themselves careful. Two warnings come with the list. First, several named fallacies are only faults in certain contexts: attacking a person's credibility is fallacious in a debate about physics and entirely proper in cross-examination of a witness. Second, spotting a fallacy shows that a particular argument failed, not that its conclusion is false. Treating the label as a victory is itself a way of avoiding the question.
Every question in this quiz is listed below with its correct answer and the reasoning behind it. Play first if you would rather not see the answers — or read through as a study sheet.
Play it insteadAnswer: B. Ad hominem
Why: The Latin means "to the person". It is not always a fault, since a witness's honesty is genuinely part of what a court has to weigh.
Answer: A. A straw man
Why: The opposite habit, restating an opponent's case in its strongest form before answering, has been nicknamed steelmanning. It tends to produce better arguments on both sides.
Answer: D. Assuming the conclusion within the premises
Why: The phrase is a clumsy translation of a Latin rendering of Aristotle. In ordinary speech it has drifted to mean "invites the question", which is why careful writers now avoid it entirely.
Answer: C. Appeal to popularity
Why: Its Latin name is argumentum ad populum. Any advertisement citing sales figures as proof of quality is running the same move.
Answer: B. A false dilemma
Why: It is also known as the either/or fallacy. It persuades because real dilemmas with only two options do genuinely occur.
Answer: A. That one step will lead inevitably to a chain of worse ones
Why: It becomes a legitimate argument the moment each link in the chain is defended rather than assumed. The fallacy is in the unexamined inevitability.
Answer: D. Confusing correlation with causation
Why: A related tag is post hoc ergo propter hoc, meaning "after this, therefore because of this". A third, hidden factor very often explains both of the things observed.
Answer: C. When the authority cited is outside their own field
Why: Citing genuine expertise is ordinary, reasonable evidence. The fault lies in borrowing prestige from someone with no standing on the actual question.
Answer: B. Redefines a term mid-argument to exclude a counterexample
Why: Antony Flew named it in the 1970s. The giveaway is a qualifier such as "true" or "real" that appears only after a counterexample has been produced.
Answer: A. An irrelevance introduced to pull attention off the point
Why: The name comes from the idea of dragging a strong-smelling cured fish across a scent trail. It works because the distraction is usually interesting in its own right.
A Germanic language wearing a French coat and carrying a Latin dictionary. Why English spelling is a mess with reasons.
7 min readEach correct answer awards 10 XP. There is zero point penalty for incorrect guesses, encouraging learning through exploration.
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