Devil's advocate

Defend a position against deliberate attack, and find out which parts of it you hold for reasons and which you hold by habit.

When to use this: When you want to go deeper
Learning impact: Reliable gain
Learning evidence: Credible with caveats
Where you are with the topic: Building understanding
How often to use it: Worth repeating often

When to use it

You hold a position you have only ever defended among people who agree.
An essay or seminar needs the weak joints of your case exposed before someone else finds them.
You suspect habit is doing more work than reasons.

What to ask AI

Type something like: “I hold this position: [claim]. Argue against me as if you are trying to win.”

Require one objection at a time, and no polite conceding when your reply is weak.

Answer each objection before asking for the next.

How it helps

Friendly agreement is a poor stress test.

Devil’s advocacy puts your claim under deliberate attack so you discover which parts you hold for reasons and which you hold by habit.

The point is not to “win.” The point is to watch where your defence thins out.

Under pressure you either produce a premise, produce evidence, or notice you were repeating a slogan.

That noticing is the learning event.

How to run it

State a real claim someone could disagree with. Vague slogans cannot be attacked usefully.
Ask for one objection at a time, aimed at your claim, not at your character.
Answer fully before the next attack. Quipping past the hard part wastes the method.
When you concede, say so out loud. Silent retreat into a softer claim is how you learn nothing.
Stop when something load-bearing breaks or when you can name the premise you refuse to give up.
Rewrite the claim in one sentence afterwards, that is the deliverable.

Example exchange

You

I hold that graded homework should always count heavily toward the final mark.

If homework is heavily weighted, what stops students from getting help that hides what they cannot do alone?

You

We can use honour codes and varied versions.

Those reduce copying. They do not show that a high homework weight measures understanding rather than compliance. What evidence would change your mind?

Copyable prompt

I hold this position: [claim]. Argue against me as if you're trying to win.
One objection at a time, and don't concede when my reply is weak. After each of
my answers, either press the same point more sharply or move to a new weak joint.
Do not summarise my view generously, attack it.

The Tell

If you enjoyed it, “won,” and cannot name a premise that was threatened, the opponent was too soft.

If the AI politely agrees mid-fight, restart with a harder rule: no concessions while your reply is vague.

The session worked when your rewritten claim is narrower or better evidenced than the one you started with.

Principle evidence

Strength of the underlying learning idea, not a claim about AI products.

The underlying learning idea is rated moderate. Deliberate opposition is standard argumentation practice and critical-thinking pedagogy. Evidence is stronger for “defending under challenge trains reasoning” than for any particular debate format.

AI delivery evidence

Whether an AI tutor delivers this method well is a separate question.

How sharp and fair an AI adversary is varies by model and prompt. Treat AI delivery as speculative.