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Thanks for the list, I'll make sure I use these more often!
wait...
~Callum
wait...
~Callum
Logical Fallacies and Constructing a Good Argument
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Re: How to construct a good argument
This is a part of my professors notes.
It is over the web also.But the discussion is interesting and I wanted to post this notes here.Please go through it and I think it helps.
Constructing a Logical Argument
Introduction
There is a great deal of argument on Usenet. Unfortunately, most of it is of very poor quality. This document attempts to provide a gentle introduction to logic, in the hope of improving the general level of debate.
Logic is the science of reasoning, proof, thinking, or inference [Concise OED]. Logic allows us to analyze a piece of reasoning, and determine whether it is correct or not. To use the technical terms, we determine whether the reasoning is valid or invalid.
One does not need to study logic in order to reason correctly. However, a little basic knowledge of logic is often helpful when constructing or analyzing an argument.
Note that I am not claiming that logic is universally applicable. That issue is very much open to debate. This document only explains how to use logic; you must decide whether logic is the right tool for the job.
Note also that this document deals only with simple boolean logic. Other sorts of mathematical logic, such as fuzzy logic, obey different rules. When people talk of logical arguments, though, they generally mean the type being described here.
Basic concepts
The building blocks of a logical argument are propositions, also called statements. A proposition is a statement which is either true or false; for example:
"The first programmable computer was built in Cambridge."
"Dogs cannot see colour."
"Berlin is the capital of Germany."
Propositions may be either asserted (said to be true) or denied (said to be false). Note that this is a technical meaning of "deny", not the everyday meaning.
The proposition is the meaning of the statement, not the particular arrangement of words used. So "A God exists" and "There exists a God" both express the same proposition.
What is an argument?
An argument is, to quote the Monty Python sketch, "a connected series of statements to establish a definite proposition". There are three stages to an argument: Premises, inference, and conclusion.
Stage one: Premises
One or more propositions will be are necessary for the argument to continue. They must be stated explicitly. They are called the premises of the argument. They are the evidence (or reasons) for accepting the argument and its conclusions.
Premises (or assertions) are often indicated by phrases such as "because", "since", "obviously" and so on.
(The phrase "obviously" is often viewed with suspicion, as it can be used to intimidate others into accepting dubious premises. If something doesn't seem obvious to you, don't be afraid to question it. You can always say "Oh, yes, you're right, it is obvious" when you've heard the explanation.)
Stage two: Inference
The premises of the argument are used to obtain further propositions. This process is known as inference. In inference, we start with one or more propositions which have been accepted. We then derive a new proposition. There are various forms of valid inference.
The propositions arrived at by inference may then be used in further inference. Inference is often denoted by phrases such as "implies that" or "therefore".
Stage three: Conclusion
Finally, we arrive at the conclusion of the argument, another proposition. The conclusion is often stated as the final stage of inference. It is affirmed on the basis the original premises, and the inference from them. Conclusions are often indicated by phrases such as "therefore", "it follows that", "we conclude" and so on.
This is a part of my professors notes.
It is over the web also.But the discussion is interesting and I wanted to post this notes here.Please go through it and I think it helps.
Constructing a Logical Argument
Introduction
There is a great deal of argument on Usenet. Unfortunately, most of it is of very poor quality. This document attempts to provide a gentle introduction to logic, in the hope of improving the general level of debate.
Logic is the science of reasoning, proof, thinking, or inference [Concise OED]. Logic allows us to analyze a piece of reasoning, and determine whether it is correct or not. To use the technical terms, we determine whether the reasoning is valid or invalid.
One does not need to study logic in order to reason correctly. However, a little basic knowledge of logic is often helpful when constructing or analyzing an argument.
Note that I am not claiming that logic is universally applicable. That issue is very much open to debate. This document only explains how to use logic; you must decide whether logic is the right tool for the job.
Note also that this document deals only with simple boolean logic. Other sorts of mathematical logic, such as fuzzy logic, obey different rules. When people talk of logical arguments, though, they generally mean the type being described here.
Basic concepts
The building blocks of a logical argument are propositions, also called statements. A proposition is a statement which is either true or false; for example:
"The first programmable computer was built in Cambridge."
"Dogs cannot see colour."
"Berlin is the capital of Germany."
Propositions may be either asserted (said to be true) or denied (said to be false). Note that this is a technical meaning of "deny", not the everyday meaning.
The proposition is the meaning of the statement, not the particular arrangement of words used. So "A God exists" and "There exists a God" both express the same proposition.
What is an argument?
An argument is, to quote the Monty Python sketch, "a connected series of statements to establish a definite proposition". There are three stages to an argument: Premises, inference, and conclusion.
Stage one: Premises
One or more propositions will be are necessary for the argument to continue. They must be stated explicitly. They are called the premises of the argument. They are the evidence (or reasons) for accepting the argument and its conclusions.
Premises (or assertions) are often indicated by phrases such as "because", "since", "obviously" and so on.
(The phrase "obviously" is often viewed with suspicion, as it can be used to intimidate others into accepting dubious premises. If something doesn't seem obvious to you, don't be afraid to question it. You can always say "Oh, yes, you're right, it is obvious" when you've heard the explanation.)
Stage two: Inference
The premises of the argument are used to obtain further propositions. This process is known as inference. In inference, we start with one or more propositions which have been accepted. We then derive a new proposition. There are various forms of valid inference.
The propositions arrived at by inference may then be used in further inference. Inference is often denoted by phrases such as "implies that" or "therefore".
Stage three: Conclusion
Finally, we arrive at the conclusion of the argument, another proposition. The conclusion is often stated as the final stage of inference. It is affirmed on the basis the original premises, and the inference from them. Conclusions are often indicated by phrases such as "therefore", "it follows that", "we conclude" and so on.
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Some one copied your data..am I correct?
see here..
http://www.infidels.org/library/modern/mathew/logic.html
Regards,
VVBB
see here..
http://www.infidels.org/library/modern/mathew/logic.html
Regards,
VVBB
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