# Logically valid but fallacious?

Deductive reasoning that is mathematically correct (logical) is valid. Deductive reasoning that is incorrect (logically faulty, illogical) is fallacious. Reasoning can be valid even if the assumptions on which it is based are false. If reasoning is valid and based on true premises, it is sound.

## What are 4 types of logical fallacies?

15 Common Logical Fallacies

• 1) The Straw Man Fallacy. …
• 2) The Bandwagon Fallacy. …
• 3) The Appeal to Authority Fallacy. …
• 4) The False Dilemma Fallacy. …
• 5) The Hasty Generalization Fallacy. …
• 6) The Slothful Induction Fallacy. …
• 7) The Correlation/Causation Fallacy. …
• 8) The Anecdotal Evidence Fallacy.

## Can a logical argument have fallacies?

Logical fallacies are arguments that may sound convincing, but are based on faulty logic and are therefore invalid. They may result from innocent errors in reasoning, or be used deliberately to mislead others. Taking logical fallacies at face value can lead you to make poor decisions based on unsound arguments.

## What does it mean when an argument is fallacious?

Fallacies are common errors in reasoning that will undermine the logic of your argument. Fallacies can be either illegitimate arguments or irrelevant points, and are often identified because they lack evidence that supports their claim.

## What is an example of fallacious?

Example: “People have been trying for centuries to prove that God exists. But no one has yet been able to prove it. Therefore, God does not exist.” Here’s an opposing argument that commits the same fallacy: “People have been trying for years to prove that God does not exist. But no one has yet been able to prove it.

## What are the 3 types of fallacies?

The common fallacies are usefully divided into three categories: Fallacies of Relevance, Fallacies of Unacceptable Premises, and Formal Fallacies. Many of these fallacies have Latin names, perhaps because medieval philosophers were particularly interested in informal logic.

## What are the 4 types of reasoning?

Four types of reasoning will be our focus here: deductive reasoning, inductive reasoning, abductive reasoning and reasoning by analogy.

## Can a fallacious argument be valid?

Deductive reasoning that is mathematically correct (logical) is valid. Deductive reasoning that is incorrect (logically faulty, illogical) is fallacious. Reasoning can be valid even if the assumptions on which it is based are false. If reasoning is valid and based on true premises, it is sound.

## Can a fallacious argument be true?

For instance, any argument form having a necessarily true conclusion, or alternatively, a necessarily false premise, is valid; yet some substitution instances of these argument forms are fallacious.

## Why you should avoid fallacious reasoning?

Fallacies prevent the opportunity for an open, two-way exchange of ideas that are required for meaningful conversations. Rather, these fallacies distract your readers with an overload of rhetorical appeals instead of using thorough reasoning. You can use logical fallacies in both written and verbal communication.