Patrick S. answered 01/25/22
Experienced Yale graduate who tutors AP, ACT, SAT, SSAT, and Writing
In logic, an argument's valid conclusion is dependent on the truth of its premises and the logical progression from premise to conclusion. Take the example below:
If it rains, we will watch a movie.
It rained.
Therefor we watched a movie.
The condition of "rain" is established as true, and the logical conclusion is that we watched the movie.
A common fallacy occurs, however, in this: If it rains, we will watch a movie.
We watched a movie.
Therefore, it rained.
The truth of the conclusion does not assure the truth of the premise.
In a syllogism, the conclusion is also reliant on the truth of the premises, as follows:
All cats have claws.
My pet is a cat.
Therefore, my pet has claws.
We cannot say validly:
All cats have claws.
My pet bear has claws.
Therefore, my pet bear is a cat.
In many political arguments, fallacies abound and are even supported by people. False and misleading information may not be true, but its ability to influence groups of people is pretty clear.