Answer or raise a “what if”: set out an imagined situation, work out what would follow, then give your judgment.

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What & why

What it is
A way to answer or argue from an imagined situation. You set out the scenario (“What if…”, “Imagine…”, “If you could…”, “If I had…”), work out what would plausibly follow under those conditions, and reach a judgment: what you would do, choose or conclude. It covers impromptu questions such as Table Topics, situational interview questions, what-ifs about a town or society, thought experiments that open a talk, and contingency plans. Keep the conditions fixed, look at more than one side where there is one, and remember that an imagined case can test an idea but cannot prove what would happen.
Why it works

Imagining a situation lets listeners rehearse it in their heads, which can make an abstract change feel concrete and bring out consequences they had not considered. Because the case is imagined, it can make an idea vivid and test it, but it cannot prove what would really happen.

Before & after

These are fictional teaching examples, not accounts of real events.

Before

“Things could go wrong, so we shouldn’t try anything new.”

After

“Suppose our town closed its main street to cars on Saturdays. Cafés and people on foot would probably gain, while shops that rely on quick stops by car could lose some trade. I would back it, with loading zones open before ten, because a busier street helps most shops more than a few lost car stops hurt them.”

See it in action

An original teaching example. The situations and results are fictional.

When you’ll use it

Table Topics and other impromptu questions: “If you could change one thing about your town, what would it be?”

Situational interview questions: “What would you do if a colleague took credit for your work?”

Public debate: “What if bus travel in our city were free? More people would ride, but the lost fares would have to be paid for some other way.”

Opening a talk: “Imagine stepping off the last train in a town you do not know, with a dead phone and nobody to ask.”

Reflection: “If I had taken that job in another city, I would earn more, but I would have lost the friends who make this place home.”

Contingency planning: “What if our main supplier fails? We would need a backup supplier and a few weeks of stock.”

Pro tip

Set the scene, follow it through, then say what you would do or think.

Questions & answers

What is hypothetical reasoning in speaking?

It is reasoning from an imagined situation. You set out a what-if, work out what would follow, and give a judgment. It answers impromptu and interview questions, tests a proposal before anyone commits to it, and can open a talk by letting listeners picture a situation.

How do I use hypothetical reasoning well?

State the conditions clearly and keep to them. Follow the consequences honestly, including drawbacks where there are some, and say what is uncertain. End with a judgment that follows from what you described: what you would do, choose or conclude.

When is it most useful?

When someone asks you a what-if, when you need to picture a change in place before anyone commits to it, when you want listeners to feel a situation they have not lived through, and when you plan for things that might go wrong.

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Put it into practice

Practice Hypothetical

Work through examples, then test your understanding in a short quiz. Your progress is saved as you practice.