The Straw Man: Hitting Something They Never Said
You say, "I'd like to look at my phone a bit less on weekends." They reply, "So you want to quit phones entirely and go back to the Stone Age? That's so extreme!"—but you never said any such thing.
This is the straw man fallacy: first you exaggerate and distort the other person's view into an easy-to-knock-down "fake person," then you knock that down and pretend you've won.
The Slippery Slope: One Step to the Sky Falling
"Sleep in ten extra minutes today, and tomorrow it'll be half an hour, and before long you'll lie around all day, lose your job, and your whole life is ruined!"—every step is treated as if it's bound to happen.
This is the slippery slope fallacy: treating "possible" as "inevitable," sliding from one small thing all the way to the worst outcome, without ever giving a reason that each step will really happen.
Appeal to Authority & Hasty Generalization
Appeal to authority: "A famous person said so, so it must be right!"—fame isn't evidence. Even an expert can be wrong when they speak outside their field or offer no support.
Note: citing an expert in the relevant field who gives supporting grounds is not a fallacy (trusting a doctor on a medical question, backed by research, is reasonable); the fallacy lies in citing an irrelevant or unsupported authority—like a celebrity endorsing a health supplement.
Hasty generalization: "The three people I know all like spicy food, so everyone in the country loves spicy food."—the sample is too small and too special to be forced onto everyone.
自测 · 学完检查一下
想真正动手做题、记进度、攒连胜？到互动课里练。
Xiaoming says "there should be some limit on gaming time," and Xiaohong replies "you just want every kid in the world banned from gaming!" Which fallacy did Xiaohong commit?
答案：Straw man
Xiaoming only said "some limit"; Xiaohong blew it up into "banned entirely" and then rebutted that—a classic straw man.
Distorting and exaggerating the other side's view into a version that's easy to rebut, then attacking that, is called the "______ man" fallacy.
答案：straw
"Straw man" is a metaphor for an easy-to-knock-down fake target you set up yourself, rather than the other person's actual view.
"Let snacks into the classroom today, and tomorrow it'll be hot pot, the day after the classroom becomes a market, and eventually the school goes under!" Which fallacy is this?
答案：Slippery slope
It pushes "bringing snacks" all the way to "the school goes under" with no reason, assuming every step is inevitable—a slippery slope.
True or false: if someone claims a small thing will inevitably trigger a chain of disasters step by step, yet never explains why each step is inevitable, it may be a slippery slope fallacy.
答案：True
The crux of the slippery slope is exactly "treating possible as inevitable, with no reasons in between." That's the key test.
"A very popular celebrity says this supplement works, so it must work." This reasoning is:
答案：Appeal to authority
Substituting fame for evidence is appeal to authority. A celebrity's fame doesn't mean they understand supplements, let alone that there's reliable evidence.
"Both classmates I asked didn't do the homework, so clearly the whole class didn't." Which fallacy is this?
答案：Hasty generalization
Concluding things about the whole class from just two people—too small and unrepresentative a sample—is a hasty generalization.