What is an example of contradictory premises?
“‘Here’s an example of Contradictory Premises: If God can do anything, can He make a stone so heavy that He won’t be able to lift it?’ “‘Of course,’ she replied promptly. Because when the premises of an argument contradict each other, there can be no argument.
What is an example of a premise?
A premise is a proposition upon which an argument is based or from which a conclusion is drawn. Merriam-Webster gives this example of a major and minor premise (and conclusion): “All mammals are warmblooded [major premise]; whales are mammals [minor premise]; therefore, whales are warmblooded [conclusion].”
What is the example of self-contradiction?
Self-contradiction meaning The definition of a self-contradiction is the act of someone or something conflicting or going against itself. An example of a self-contradiction is an atheist wearing a cross.
What is self contradictory in logic?
Self-contradiction (self contradictory statement) a statement which is necessarily false on the basis of its logical structure. Descartes formulated the concept of necessary truth such that a statement is said to be “necessarily true” if it is logically impossible to deny it (i.e., believe it to be false).
Is self contradiction a fallacy?
A self-contradiction fallacy is a statement from which no coherent conclusion can be drawn because the statement seems to contradict itself. Statements like this cannot be true, because to affirm one conclusion drawn from the sentence would by necessity refute another conclusion.
How do you write a premise?
The premise is a two- or three-sentence statement of the book’s basic concept or thesis. Usually, it identifies the need and then proposes a solution. Since this is the first part of every book proposal, it’s important to get it right.
How do you identify a premise?
If it’s being offered as a reason to believe another claim, then it’s functioning as a premise. If it’s expressing the main point of the argument, what the argument is trying to persuade you to accept, then it’s the conclusion. There are words and phrases that indicate premises too.
What is self-contradictory?
adjective. If you say or write something that is self-contradictory, you make two statements which cannot both be true. He is notorious for making unexpected, often self-contradictory, comments.
What is an example of contradiction?
A contradiction is a situation or ideas in opposition to one another. Examples of a contradiction in terms include, “the gentle torturer,” “the towering midget,” or “a snowy summer’s day.” A person can also express a contradiction, like the person who professes atheism, yet goes to church every Sunday.
What are the two types of statement?
The different types of statements used in Java are: Declarative Statements. Assignment Statements. Input/Output Statements.
When does an argument have a contradictory premise?
Contradictory Premises in an Argument. Contradictory premises involve an argument (generally considered a logical fallacy) that draws a conclusion from inconsistent or incompatible premises. Essentially, a proposition is contradictory when it asserts and denies the same thing.
Which is the best definition of self contradiction?
self-con·tra·dic·tion. It is a self-contradiction that Bianca asserts being a vegan to save the animals but she wears a fur coat. noun. The definition of a self-contradiction is the act of someone or something conflicting or going against itself.
When to use the rule of contradiction in logic?
The first line contained the self-contradictory premise as in the previous example. On lines 2 and 3 I used conjunction elimination (∧E) to both sides of the premise (line 1) to place these on separate lines. Once I have them on separate lines, I can use the rule of contradiction introduction (⊥I) to note on line 4 that I have a contradiction (⊥).
Why are there contradictions in a sound argument?
For a sound argument true premises are needed, as well as valid logic. The problem with contradictory premises is that they cannot both be true. If one is true, the other must be false, and vice versa. In other words, we can be certain that at least one of them must be false, and cannot therefore generate a sound argument.