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'Fallacy of Assumption' describes a class of formal and informal logical fallacies that are to do with a flaw in an argument's assumptions.
A common example of a fallacy of assumption (there are others) is when someone assumes the very thing they are trying to prove. This is commonly known as begging the question, or petitio principii.
The nature of this fallacy is obvious in the following form:
P1: Fairies Exist
Therefore
C2: Fairies Exist
It's clear that the form of the argument above could be used to 'prove' anything.
As the argument becomes increasingly elaborate, it becomes easier to miss the fallacy.
P1: Fairies Exist
P2: Only fairies can make gardens that are extremely beautiful
P3: My garden is extremely beautiful
Therefore (from P1, P2 and P3)
C1: My garden was made extremely beautiful by fairies
Therefore (from C1)
C2: Fairies Exist
Arguments that commit a fallacy of assumption can easily hide the fallacy by rendering it implicit. This means making a premise in the argument that implies the fallacious assumption without explicitly stating it. In the example immediately above, the statement that 'only fairies can make gardens extremely beautiful' has the assumption that fairies exist built into it. Because of this, P1 can be furtively omitted, giving the logical form below.
P1: Only fairies can make gardens that are extremely beautiful
P2: My garden is extremely beautiful
Therefore (from P1 and P2)
C1: My garden was made extremely beautiful by fairies
Therefore (from C1)
C2: Fairies exist
This argument could be delivered in speech in something like the following manner:
My garden is extremely beautiful. Sure, I work at it. But no one can make a garden this beautiful - no one human, anyway. Only fairies could have done it! I know that fairies had to have made my garden so beautiful, and that's how I know that fairies really exist.
The example may seem silly given the subject matter is fairies. However, arguments of a similar form are very common for other ideas.
What else can I help you with?
What is the difference between a formal fallacy and an informal fallacy?
A formal fallacy is a mistake in the logical structure of an argument, while an informal fallacy is an error in the content or context of the argument.
What is the difference between the Fallacy of Composition and the Post Hoc Fallacy?
Post hoc fallacy is simply that if an event A occurs,then an event B occurs. concluding that B occurred because of A is called post hoc fallacy. eg- i stood up in the crowd .everyone else stood up too. concluding that all stood because of me is post hoc fallacy. fallacy of composition is that we assume what is true for a part will also be true for the whole . eg- let's say prices of crops are high. It might be profitable for one farmer to increase the amount of crops he is selling. However, if all farmers where to sell more crops, there would be a flood of crops in the market and prices would go down, harming farmers overall.
The fallacy of irrelevant reason is sometimes called?
The fallacy of irrelevant reason is sometimes called the red herring fallacy. It involves diverting attention away from the main issue by introducing an irrelevant argument or point.
Can you provide examples of false premise fallacies in arguments?
A false premise fallacy occurs when an argument is based on a false or unsupported assumption. For example, "All birds can fly, so penguins must be able to fly too" is a false premise fallacy because penguins are flightless birds. Another example is "If you don't support this policy, you must not care about the environment," which assumes that only one policy can help the environment.
Which fallacy was identified in the excerpt about Sam the surfer?
The fallacy identified in the excerpt about Sam the surfer is the hasty generalization fallacy. This fallacy occurs when a conclusion is drawn from insufficient evidence, in this case assuming all surfers are careless based on one individual's behavior.
How would you use assumption in a sentence?
The assumption that all pies taste good is a societal fallacy.
What is fallacy of consumption and assumption to be causation problems in economics?
Fallacy of consumption is when you assume that all men are endowed with huge cocks ;-p <---------------8
Which logical fallacy makes the assumption that youre trying to prove is a fact?
begging the question.
Is this True or false a logic error in which a conclusion is not a logical consequence of the evidence is an assumption?
False. A logic error in which a conclusion does not logically follow from the evidence is typically referred to as a fallacy, not an assumption. An assumption is a belief or statement taken for granted without proof, whereas a fallacy specifically involves incorrect reasoning in the argument.
Which of the following is a form of the overgeneralization fallacy?
She's good at basketball, so she's probably good at all sports.
What is the suffix of fallacy?
fallacy(period)
What part of speech is fallacy?
Fallacy is a noun.
Can anyone give an example of a fallacy?
A fallacy is a statement that is in error or not correct. "The earth is flat" is a fallacy.
A fallacy is basically an?
A fallacy is basically an error in reasoning.
What is fallacy of positive instances?
fallacy of positive instances
What is the difference between a formal fallacy and an informal fallacy?
A formal fallacy is a mistake in the logical structure of an argument, while an informal fallacy is an error in the content or context of the argument.
What is Ad hominem?
An ad hominem fallacy, sometimes called a "genetic fallacy" or "to the person fallacy" or shorted to "ad hominem", is a kind of logical fallacy. This logical fallacy's definition is: attacking the person rather than the statements the person made.
