![jennifer7037](/avatars/47782.jpg)
jennifer7037
02.11.2019 •
English
Ineed an example of a deductive argument
Solved
Show answers
More tips
- F Food and Cooking 10 Reasons Why You Should Avoid Giving Re-Gifts: An Informative Guide...
- F Family and Home How to Sew Curtain Tapes: Best Tips from Professionals...
- A Animals and plants How to Grow Lime from a Seed: Simple Tips and Interesting Facts...
- C Computers and Internet How to Create a Folder on Your iPhone?...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Answers on questions: English
- E English The Iroquois use the ideas in this myth to A: Explain how natural phenomena came to be B:describe why animals are important to people C: Explain the complexities of human...
- E English Reread this lullaby. How do the words if only, if only help connect the two timelines in the story?...
- E English 2 blurb sentences plz help rn...
- E English What is the main purpose of including this information? It shows how Ginny was a burden to her owner. It shows how Ginny and her owner worked together to help cats. It...
- E English Aswimmer finishes in first place at an important swim meet. (exposition or climax? )...
- E English Question 16 (2 points) choose the sentence(s) below in which commas are used correctly. question 16 options: “amir, sign your name.” “ sign your name, amir.” both are...
- E English Out of the following statements, which one is subjective? milk contains vitamin a, vitamin d, and calcium. a 2010 scientific study in nutrition journal showed that almost...
- E English Alaboratory analysis of vanillin, the flavoring agent in vanilla, determined the mass percent composition: c, 63.15%; h, 5.30%; o, 31.55%. determine the empirical formula...
- E English Does saying leave a comment do anything?...
- E English Can someone me summarise every chapter of the sign of four it s due friday the 16th...
Ответ:
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
Ответ:
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.
Ответ:
es
Explanation: