Question: Can An Argument Be Valid But Not Good?

Can a valid argument be weak?

An argument may be weak, therefore, because it is ill-formed.

Or in cases where it is valid or cogent, then it may be weak because you fail to believe that the premises are true.

You may disagree with one or more of the premises, or you may be inclined to suspend judgement..

What makes an argument valid or invalid?

Valid: an argument is valid if and only if it is necessary that if all of the premises are true, then the conclusion is true; if all the premises are true, then the conclusion must be true; it is impossible that all the premises are true and the conclusion is false. … If this is possible, the argument is invalid.

Can a valid argument have all false premises but a true conclusion?

TRUE. By definition, a valid argument cannot have a false conclusion and all true premises. So if a valid argument has a false conclusion it must have some false premise.

What are the 4 types of arguments?

Different types of argumentsIntro: Hook and thesis.Point One: First claim & support.Point Two: Second claim & support.Point Three: Third claim and support.Conclusion: Implications or future & restate thesis.Apr 6, 2020

What is a bad argument?

A bad argument is one in which the premises do not give good reason to accept the conclusion. The conclusion may be true, but the reasons do not give good reason to accept it. … The premises are plausible, that is, must have good reason to believe that the premises are true. 2. The argument must be valid or strong.

Can arguments be valid but not true?

A deductive argument is said to be valid if and only if it takes a form that makes it impossible for the premises to be true and the conclusion nevertheless to be false. In effect, an argument is valid if the truth of the premises logically guarantees the truth of the conclusion. …

What is strong argument?

Definition: A strong argument is a non-deductive argument that succeeds in providing probable, but not conclusive, logical support for its conclusion.

What are signs of a weak argument?

As you read the two passages, look for the following signs of a weak argument:Statements of opinion presented as facts.Statements presented as truths with little or no evidence to support them.Correlated events in which the cause-and-effect relationship is claimed but not proven.More items…

What is an inductively weak argument?

A weak inductive argument is one where the conclusion probably would not follow from the premises, if they were true.

What is the difference between valid arguments and fallacious arguments?

An argument is valid if the conclusion must be true whenever the premises are true. In other words, an argument is valid if the truth of its premises guarantees the truth of its conclusion. … An argument that is not valid is invalid or fallacious. If an argument is valid and its premises are true, the argument is sound.

What is an example of an invalid argument?

An argument can be invalid even if the conclusion and the premises are all actually true. To give you another example, here is another invalid argument with a true premise and a true conclusion : “Paris is the capital of France. So Rome is the capital of Italy.” .

How do you tell if an argument is valid using a truth table?

In general, to determine validity, go through every row of the truth-table to find a row where ALL the premises are true AND the conclusion is false. Can you find such a row? If not, the argument is valid. If there is one or more rows, then the argument is not valid.

Are all valid arguments good arguments?

Despite the argument’s validity, the answer is clearly “No.” It is not a good argument because the premise of the argument is, unfortunately, false. Arguments can be valid but still have one or more false premises. If an argument is both valid and has all true premises, we will say that the argument is sound.

Are all weak arguments invalid?

They’re both logically INVALID. They’re both fallible inferences. Even if the premises are true you could still be wrong about the conclusion. The difference is that in a STRONG argument the premises make the conclusion VERY LIKELY true. A WEAK argument doesn’t even give us this.

Can you have an invalid sound argument?

Question originally answered: Can a sound argument be invalid? No, it cannot. A sound argument is defined as a valid argument, with the extra property that the premises of the argument are true.

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