Construct reasoning

Chapter 8: Construct Reasoning

Welcome! So far in your Critical Thinking journey, you have learned how to deconstruct and evaluate arguments made by other people. In this chapter, the roles are reversed. You are going to learn how to become the architect of your own arguments. Building a strong argument is like building a house: you need a solid foundation, sturdy walls, and a roof that ties everything together. Let’s learn how to build reasoning that is persuasive and rock-solid!

8.1 The Foundation: Conclusions and Reasons

Before you can convince anyone of anything, you need to know exactly what you are trying to prove and why. This is the heart of constructing reasoning.

Articulating a Conclusion

The Main Conclusion is the "destination" of your argument. It is the final statement that you want your reader to accept. When you construct your own reasoning, your conclusion must be clear and specific. Avoid being vague!
Example: Instead of saying "Pollution is bad," a stronger conclusion would be "Governments must implement stricter taxes on plastic packaging to reduce ocean pollution."

Providing Reasons

Reasons are the "bricks" of your argument. They provide the support that holds up your conclusion. Without reasons, you just have an opinion, not an argument! A good reason should directly lead the reader toward the conclusion.

Quick Review: The Argument Formula
Reason + Reason = Conclusion

Don't worry if this seems tricky at first! Just remember: whenever you make a claim, ask yourself, "Because...?" The answer to that question is your reason.

8.2 Building the Structure: Strands and Intermediate Conclusions

A simple argument has one or two reasons. A comprehensive argument uses different paths of thinking to make the case even stronger.

Developing Strands of Reasoning

Think of strands of reasoning as different "routes" to the same destination. If you want to argue that students should have more PE (Physical Education) classes, you could have:
1. Strand A: Health benefits (Physical health).
2. Strand B: Mental focus (Brain health).
3. Strand C: Social skills (Teamwork).
By using multiple strands, even if the reader finds one strand weak, the others still support the conclusion!

Using Intermediate Conclusions (ICs)

An Intermediate Conclusion is a "stepping stone." It is a conclusion that is supported by reasons, but it then acts as a reason itself to support the Main Conclusion.
Example:
Reason: Regular exercise releases endorphins.
Intermediate Conclusion: Therefore, PE classes improve student happiness.
Main Conclusion: Thus, schools should increase the number of PE classes.

Key Takeaway: Use ICs to break your argument into logical steps. This makes it much easier for your reader to follow your "train of thought."

8.3 Strengthening Your Argument

To move from a basic argument to a high-level persuasive argument, you need to add specific elements that give your reasoning more weight. The syllabus highlights five key ways to do this:

1. Counter-assertion and Counter-argument with Response

A counter-argument is an argument for the "other side." You might think including one makes your argument weaker, but it actually makes you look more balanced and prepared! The trick is to provide a response (a rebuttal) that shows why the counter-argument is less important than your own reasoning.

2. Examples and Evidence

Examples make your abstract ideas "real." Evidence (like statistics or facts) provides the proof.
Analogy: If your reason is a claim that "this glue is strong," the evidence is a photo of the glue holding up a car!

3. Analogy

An analogy is a comparison between two things that are similar in some way to help explain a point.
Example: "Just as a car cannot run without fuel, a student cannot perform well in exams without adequate sleep."

4. Hypothetical Reasoning

This is the "If... then..." tool. It helps you explore the consequences of an action.
Example: "If we continue to use fossil fuels at the current rate, then global temperatures will rise to a level that causes irreversible damage."

Memory Aid: The "E-C-A-H" Checklist
To strengthen your writing, try to include:
E - Evidence/Examples
C - Counter-arguments
A - Analogies
H - Hypothetical (If... then) reasoning

8.4 Putting it All Together: A Step-by-Step Guide

When you are asked to construct an argument in your exam (especially in Paper 4), follow these steps:

Step 1: State your Main Conclusion clearly.

Make sure it is a claim that people could disagree with (otherwise, it’s just a fact, not an argument!).

Step 2: Create two or three "Strands" of reasoning.

Think of different angles (Economic, Social, Environmental, etc.).

Step 3: Build your Strands using Intermediate Conclusions.

Use the "Reason -> IC -> Main Conclusion" structure to show clear logical steps.

Step 4: Sprinkle in your strengthening elements.

Add an analogy or a hypothetical scenario to make your point vivid. Use evidence to ground it in reality.

Step 5: Address the "other side."

Mention a counter-argument but immediately follow it with a response that brings the reader back to your side.

Common Mistake to Avoid: Don't just list facts! An argument is about persuasion. Always link your facts back to your conclusion using "signpost" words like therefore, consequently, or this proves that.

Quick Review Box: Key Terms
• Main Conclusion: The final point you want to prove.
• Intermediate Conclusion: A mid-point conclusion that supports the main one.
• Strand: An independent line of reasoning.
• Counter-argument: An argument for the opposing view.
• Hypothetical Reasoning: Reasoning based on "If... then..." scenarios.

Did you know? In ancient Greece, the art of constructing reasoning was called Rhetoric. Great thinkers like Aristotle believed that being able to construct a logical argument was one of the most important skills a citizen could have. You are following in their footsteps!