Sign In
Ask Question
English
Brock Benitez
29 August, 12:04
I need an example of a deductive argument
+5
Answers (
2
)
Short Shorts
29 August, 12:23
0
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. Otherwise, a deductive argument is said to be invalid. A deductive argument is sound if and only if it is both valid, and all of its premises are actually true. Otherwise, a deductive argument is unsound.
According to the definition of a deductive argument (see the Deduction and Induction), the author of a deductive argument always intends that the premises provide the sort of justification for the conclusion whereby if the premises are true, the conclusion is guaranteed to be true as well. Loosely speaking, if the author's process of reasoning is a good one, if the premises actually do provide this sort of justification for the conclusion, then the argument is valid.
In effect, an argument is valid if the truth of the premises logically guarantees the truth of the conclusion. The following argument is valid, because it is impossible for the premises to be true and the conclusion nevertheless to be false: Elizabeth owns either a Honda or a Saturn. Elizabeth does not own a Honda. Therefore, Elizabeth owns a Saturn.
It is important to stress that the premises of an argument do not have actually to be true in order for the argument to be valid. An argument is valid if the premises and conclusion are related to each other in the right way so that if the premises were true, then the conclusion would have to be true as well. We can recognize in the above case that even if one of the premises is actually false, that if they had been true the conclusion would have been true as well. Consider, then an argument such as the following: All toasters are items made of gold. All items made of gold are time-travel devices. Therefore, all toasters are time-travel devices.
Obviously, the premises in this argument are not true. It may be hard to imagine these premises being true, but it is not hard to see that if they were true, their truth would logically guarantee the conclusion's truth.
It is easy to see that the previous example is not an example of a completely good argument. A valid argument may still have a false conclusion. When we construct our arguments, we must aim to construct one that is not only valid, but sound. A sound argument is one that is not only valid, but begins with premises that are actually true. The example given about toasters is valid, but not sound. However, the following argument is both valid and sound:
In some states, no felons are eligible voters, that is, eligible to vote. In those states, some professional athletes are felons. Therefore, in some states, some professional athletes are not eligible voters.
Here, not only do the premises provide the right sort of support for the conclusion, but the premises are actually true. Therefore, so is the conclusion. Although it is not part of the definition of a sound argument, because sound arguments both start out with true premises and have a form that guarantees that the conclusion must be true if the premises are, sound arguments always end with true conclusions.
It should be noted that both invalid, as well as valid but unsound, arguments can nevertheless have true conclusions. One cannot reject the conclusion of an argument simply by discovering a given argument for that conclusion to be flawed.
Whether or not the premises of an argument are true depends on their specific content. However, according to the dominant understanding among logicians, the validity or invalidity of an argument is determined entirely by its logical form. The logical form of an argument is that which remains of it when one abstracts away from the specific content of the premises and the conclusion, that is, words naming things, their properties and relations, leaving only those elements that are common to discourse and reasoning about any subject matter, that is, words such as "all," "and," "not," "some," and so forth. One can represent the logical form of an argument by replacing the specific content words with letters used as place-holders or variables.
For example, consider these two arguments: All tigers are mammals. No mammals are creatures with scales. Therefore, no tigers are creatures with scales. All spider monkeys are elephants. No elephants are animals. Therefore, no spider monkeys are animals. These arguments share the same form: All A are B; No B are C; Therefore, No A are C.
Comment
Complaint
Link
Khloe Rollins
29 August, 14:37
0
You also know that all apples are fruits, and a Granny Smith is an apple. Therefore, the Granny Smith has to be a fruit. This is an example of syllogism, a form of deductive reasoning. Deductive reasoning is a type of logic where general statements, or premises, are used to form a specific conclusion.
or all kids go to school, johnny is a kid, therefore johnny goes to school
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Get an answer to your question ✅
“I need an example of a deductive argument ...”
in 📙 English if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers
You Might be Interested in
Read the closing of a letter below. with sincerest and warmest regards Which closing is capitalized correctly? A. With Sincerest and Warmest Regards B. With sincerest and warmest Regards C. with Sincerest and Warmest Regards D.
Answers (1)
In science, activities are preformed to test a hypothesis
Answers (1)
Which statements describe the features of a claim? Check all that apply. The claim can be explained with reasons. The claim takes a position. The claim offers an opinion. The claim can be supported with evidence. The claim is specific.
Answers (1)
How should the underlined section be revised to create parallel structure? A) guiding the team to carry out their vision B) to guide the team that will carry out their vision C) guiding the team that is carrying out their vision
Answers (1)
What purpose does textual evidence serve in an comparative essay? A.) making the essay more interesting to read and discuss B.) supporting a claim about similarities or differences C.) summarizing the plots of two different stories D.
Answers (1)
New Questions in English
By the end of the scene, how often have Bernardo and Marcellus seen the Ghost? three times twice once
Answers (1)
Put benefit and expertise in a single sentence (simple sentence).
Answers (1)
04: Which question would a reader most likely ask to gain a better understanding of Elizabeth Linscheid's life as described in "Home Place Retold"?
Answers (2)
What book in the bible does samuel l. Jackson quote in pulp fiction?
Answers (1)
What, to the american slave, is your 4th of july?
Answers (1)
Home
»
English
» I need an example of a deductive argument
Sign In
Sign Up
Forgot Password?