The short version
You make an argument. They restate it as something more extreme, sloppier, or stupider than what you actually said — and then they refute that.
The refutation is often perfectly good. It’s just aimed at a claim nobody made. Meanwhile your real argument is still standing there untouched, and you’ve now lost your turn to the business of saying “that isn’t what I said,” which sounds defensive and gets you nowhere.
Where the name comes from
Nobody actually knows. You’ll often hear it was a military training dummy, and it might have been, but that’s a guess rather than a finding. The older phrase is “man of straw,” which has meant a scarecrow, an effigy, and a person of no substance — someone with nothing behind him. It was already being used for an invented opponent in the 1620s, the better part of three centuries before anyone wrote “straw man” in that sense.
Which image the phrase actually grew out of has never been settled, and it doesn’t much matter, because they all land in the same place. The thing is man-shaped, it doesn’t hit back, and knocking it over tells you nothing whatsoever about whether you could knock over a man.
What it looks like
I think we should test this release for another week.
So you want to never ship anything.
The speed limit on that road is too low for the conditions.
Great — no speed limits at all, let people die.
Why it doesn’t work
Because it refutes a claim nobody made. That part is obvious. The interesting question is why intelligent people do it constantly without noticing.
It’s because the extreme version feels like the real position. When somebody wants another week of testing, it is genuinely tempting to hear “this person will never be satisfied,” because you’ve met that person before. That feeling is the trap. You don’t get to argue with what you suspect somebody believes. You have to argue with what they said. If you’re right about the hidden position, you can go get it — ask them directly, and make them say it out loud.
None of this requires bad faith, and it’s worth being clear that the fallacy doesn’t need any. It’s still a straw man when the misreading is completely sincere — the argument you knocked down still isn’t the one that was made, whether or not you meant to swap it. What a correction changes isn’t whether it was a straw man. It’s only what happens next — carry on after being told, and what was a mistake becomes something else.
The cost is that the actual argument never gets tested. Another week of testing might be a bad idea for real, specific reasons. Nobody will ever hear them, because the conversation went somewhere else.
The opposite move
The counter to a straw man isn’t a rule, it’s a habit: restate the other person’s argument in its strongest form, the version they’d sign their name to, and answer that one.
If you can’t state their position well enough that they’d nod at it, you don’t understand it yet, and anything you say next is aimed at a dummy. This is also the fastest way to win arguments you deserve to win — beating the strong version actually settles something.
This is not a straw man
- Following an argument to its consequences. “If we apply that rule generally, here’s where it lands” is a real move. It stays honest as long as you’d genuinely accept “no, here’s why it doesn’t generalize” as an answer.
- Summarizing. Every restatement loses something. Ask “is that fair?” before you swing, and mean it.
- Arguing with a position somebody actually holds but is currently softening. That’s a different problem, and it has its own page.
How to call it out
- “That’s not the claim. The claim is: [say it again, plainly]. Take that one.”
- “Would you agree that’s a fair restatement?” — asked before the argument starts, this prevents the whole thing.
- “That’s not my position, but I’ll defend it for you if you like — and then you can tell me which of us you were arguing with.”
That last one is worth keeping in your pocket. Offering to argue for the extreme version makes it very clear, very fast, that it was never yours — nobody volunteers to defend a position they were caught holding.