/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 18 If the conclusion of an argument... [FREE SOLUTION] | 91Ó°ÊÓ

91Ó°ÊÓ

If the conclusion of an argument is false, does it follow that the argument is invalid?

Short Answer

Expert verified
A false conclusion does not imply the argument is invalid; validity concerns logical structure.

Step by step solution

01

Understand the Definitions

An argument in logic consists of premises and a conclusion. An argument is valid if, assuming the premises are true, the conclusion must also be true. An argument is invalid if it is possible for the premises to be true and the conclusion to be false.
02

Consider the Truth of the Conclusion

If the conclusion of an argument is false, we need to analyze the relationship between the truth of the premises and the falsity of the conclusion. An argument can still be valid if the premises are false but lead to a false conclusion.
03

Evaluate Argument Validity

Validity focuses on the structure of the argument, not the actual truth values. A false conclusion can occur in a valid argument if the premises are false. Validity only ensures that if the premises are true, the conclusion cannot be false.
04

Form the Logical Conclusion

A false conclusion does not automatically mean the argument is invalid. Validity is about the logical structure, not the actual truth of the conclusion.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91Ó°ÊÓ!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Premises and Conclusions
In logical arguments, understanding the relationship between premises and conclusions is key. **Premises** are the starting points of an argument. They are statements assumed to be true for the sake of the argument. The **conclusion** is the statement that follows from these premises.

The entire purpose of an argument is to determine whether the conclusion logically follows from the premises. If you imagine an argument as a train trip, the premises are your starting stations, and the conclusion is your destination. An effective logical trip takes you from your premises smoothly and reliably to your conclusion.
  • Premises: Assumed true, form the foundation.
  • Conclusion: What the argument is trying to prove.
Understanding this relationship helps clarify whether an argument is constructed well, and thus, whether it serves its purpose in reaching a logical conclusion.
Argument Structure
The structure of an argument is crucial in determining its validity. A logical argument is not just about having true premises and a true conclusion, but rather about how the premises support the conclusion.

Arguments follow a specific structure that can be broken down into the relationship between the premises and the conclusion. This structure involves logical connections, often using if-then statements, to ensure that the conclusion follows logically from the premises. The key here is that the logical path from the premises to the conclusion must be solid.
  • Logical Sequence: Premises should connect logically to the conclusion.
  • Structure Matters: Even if premises and conclusions are true, without proper structure, the argument can be invalid.
The "road" from premises to conclusion being clear and well-paved is what ensures argument validity, depending not on specific truth values, but on the nature of their connection.
Truth and Validity in Logic
Truth and validity in logic are related but distinct concepts. An argument can be valid even if its conclusion is false. This is because validity is about the form of the argument, not the factual truthfulness of its premises or conclusion.

Validity ensures that if the premises were true, then the conclusion must also be true. However, if the premises are false, the argument can still be valid if the structure is correct and doesn't allow a true premises set to lead to a false conclusion.
  • Truth of Premises: Individual truth of each statement.
  • Validity: Logical form guaranteeing true conclusion if premises are true.
  • Independence: False conclusions don't imply invalidity if structure is correct.
In essence, understanding the distinction between truth and validity allows us to critically analyze arguments on both content and form, ensuring a comprehensive evaluation.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Fact \(1 .\) If Miss Scarlet did it, she used a revolver. Fact \(2 .\) No bullets were fired. Fact \(3 .\) If Colonel Mustard didn't do it, then Miss Scarlet did it. Fact \(4 .\) If a revolver was used, a bullet was fired. Consider the following statements: Statement 1. If someone is a felon, he cannot vote. Statement 2. A person is a felon iff he has committed a serious crime. Statement 3. Dillinger has committed a serious crime. Use the statements to write a direct proof that Dillinger cannot vote.

Compare the following two sentences: If it is your birthday, then you get some presents. Only if it is your birthday, do you get some presents. Do both sentences say the same thing?

The students will stop paying attention if the class is boring. The class isn't boring. Therefore, the students will pay attention.

The following statements appear on the customer agreement for obtaining a credit card. Statement 1. A transaction finance charge is a charge made if a new advance is added to your account. Statement \(2 .\) If you go over your credit limit, you will be charged a fee. Statement 3. A supercheck is a check designed for use with your credit card account. Statement 4. If you are charged a fee, the fee will be added to your new balance. Statement \(5 .\) If your card is lost or stolen, you agree to report it immediately. Which two statements can be combined to form a syllogism?

Consider the statement.If your temperature is more than \(102^{\circ}\) then you have a fever. If the statement is represented by the symbols \(a \rightarrow b,\) what words do \(a\) and \(b\) represent?

See all solutions

Recommended explanations on Math Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.