All Questions
10
questions
1
vote
1
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Question of Validity in syllogisms of deductive argument
I read the following excerpt from my A-Level Philosophy book:
"Two key terms that you need to understand in relation to deductions and other
forms of argument are ‘validity’ and ‘soundness’. ...
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2
votes
1
answer
119
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Counterfactuals in Premises for Arguments
Can counterfactuals in premises make an argument sound and valid?
I understand that soundness requires both validity and true premises whilst validity requires the premises to follow to the conclusion....
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0
votes
1
answer
520
views
In logic, can we or can we not prove that a formula is invalid?
I'm a novice in this field of logic. While reading about soundness and completeness of a method, I read this line: "a logical system has the soundness property if and only if every formula that ...
3
votes
4
answers
19k
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Is "(1) All humans are mortal. (2) Socrates is mortal. Conclusion: Socrates is human." unsound argument?
I am new to a philosophy course and recently learned about validity and soundness of an argument. In this exercise:
Premise 1: All humans are mortal.
Premise 2: Socrates is mortal.
Conclusion: ...
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22
votes
10
answers
15k
views
Can an argument be valid even though one of its premises is false?
Is it possible for an argument to be valid by virtue of its logical form, but contain a false premise? In other words, can a premise be false even though the argument itself is logically valid?
...
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0
votes
1
answer
87
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Are these basic arguments considered valid and sound?
I'm trying to come up with some basic arguments to construct a philosophy paper and I am wondering if the following arguments are valid and sound. Thanks for the help!
If humans have flaws then they ...
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2
votes
1
answer
376
views
Soundness of a deductive argument
I am a student who was just introduced to philosophy.
On a test, we were given the following multiple-choice question on soundness of a deductive argument:
“Anything that travels in time necessarily ...
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1
vote
1
answer
239
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Validity and Soundness
The following is an argument which I thought was sound but I have been told I am wrong.
Some men are married
Therefore
Some men are not married
I think this argument is sound because the premise ...
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2
votes
2
answers
271
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Is this lexical or structural ambiguity: "criminal actions are illegal, and murder trials are criminal actions, so murder trials are illegal"?
I am yet to learn about ambiguity and sound arguments but am attepting to make the following argument sound.
All criminal actions are illegal
All murder trials are criminal actions
Therefore
All ...
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1
vote
2
answers
2k
views
Determining the soundness of arguments
I was recently given the following question in an exam.
Determine the soundness of the following argument:
John lives on the same street as Mary.
Mary lives on the same street as Sam.
Therefore, Sam ...
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