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Author Topic:   A proper understanding of logical fallacies will improve the quality of debate
Modulous
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Posts: 7801
From: Manchester, UK
Joined: 05-01-2005


(1)
Message 193 of 344 (641665)
11-21-2011 10:28 AM
Reply to: Message 191 by Percy
11-21-2011 9:41 AM


hawking citation
quote:
I think you mean Hoyle.
I'm guessing he meant Hawking:
Hawking, Brief History of Time writes:
Aristotle, and most of the other Greek philosophers, on the other hand, did not like the idea of a creation because it smacked too much of divine intervention.
This isn't really 'admitting' it, but I suspect this is the quote designtheorist had in mind.
Edited by Modulous, : No reason given.

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Modulous
Member
Posts: 7801
From: Manchester, UK
Joined: 05-01-2005


Message 250 of 344 (641774)
11-22-2011 10:50 AM
Reply to: Message 244 by designtheorist
11-22-2011 10:33 AM


hawking accepts the big bang
If the big bang is defined as the beginning of time that started with a singularity
It isn't. The big bang merely posits that the universe was much hotter and denser in the past and that the universe expanded from this hot, dense state. Hawking accepts that the universe was once much hotter and denser. Therefore, Hawking accepts the Big Bang.
then yes indeed Hawking has rejected it
As have most physicists. The idea of a singularity comes out of the mathematics of relativity. Physicists have postulated that this can't be right for some time and that some marriage between relativity and quantum physics is required.
I believe some wondered if the singularity was somehow real, but that view is marginal these days as far as I am aware. There are singularities throughout physics, not just at the big bang, and nobody believes these singularities are real - they are just artefacts of mathematics.

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Modulous
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Posts: 7801
From: Manchester, UK
Joined: 05-01-2005


(2)
Message 276 of 344 (641806)
11-22-2011 1:09 PM
Reply to: Message 264 by designtheorist
11-22-2011 12:13 PM


Re: Introducing the cherry picking fallacy
The thread has obviously gone off the rails as people want to discuss my previous thread. What all of these disagreements have in common is faulty critical thinking known variously as "confirmation bias," "group-think," "tribalism" and "cherry-picking."
I believe it has been mentioned a few times, but the entire problem with posting quotes from people is that there can be different interpretations of what people mean when they say certain things. Our intrinsic human biases can lead us to believing that experts are in agreement with us when they aren't, on all the important points in question.
Quote mining is of course, a subset of 'cherry-picking'. It is cherry picking select quotes that support a particular interpretation of the opinions of a proposed expert. It also falls under 'confirmation bias': a person finds quotes that agree with his position, and does not seek or discounts claims that call conclusion into question.
Cherry picking is often seen in the EvC debate as creationists like to cherry pick results and try to weave them together to suggest they are right. They will cherry pick dating evidence, quote mine the sources and try to weave a story of doubt over radiometric dating, for example.
It is important to try to avoid confirmation bias and tribalism. It is a serious flaw in good critical thinking skills.
Critical thinking avoids confirmation bias because it is critical and confirmation bias is a suspension of criticism. When you have a belief (such as Eddington was an atheist who converted to a religious view because of the big bang), it is important you seek out information that may contradict this view, before presenting it as any kind of evidence.
Thus, you would confirm the religious views of Eddington (specifically you would seek evidence that he was not an atheist, rather than just looking for evidence he was), when he accepted the big bang and when any supposed conversion is meant to have occurred, and preferably you wouldn't settle until you could find a causal link or evidence that a causal link existed between the acceptance of the theory and the subsequent conversion (so as not to fall foul of post hoc ergo propter hoc).
Another sign of confirmation bias is when people become very emotional when confronted with evidence which is contrary to their position. Emotionalism is recognized as inimical to sound rational thinking.
This emotional reaction is called 'cognitive dissonance'
quote:
Cognitive dissonance is a discomfort caused by holding conflicting ideas simultaneously.
(wiki)
Everybody has experienced it, the true test is in how a person handles the experience. Any belief that you have not been in this position, would be frankly delusional - I'm sure you'd agree.
It would be a suspension of critical thinking to reason like this: 'The Eddington being an atheist claim supports my hypothesis, my hypothesis is right, therefore Eddington was an atheist'. I'm sure you can see, since you have admitted you made a mistake, how you could have run afoul of your own stated standards of reasoning.

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 Message 264 by designtheorist, posted 11-22-2011 12:13 PM designtheorist has replied

Replies to this message:
 Message 282 by designtheorist, posted 11-22-2011 3:18 PM Modulous has replied

  
Modulous
Member
Posts: 7801
From: Manchester, UK
Joined: 05-01-2005


Message 277 of 344 (641807)
11-22-2011 1:18 PM
Reply to: Message 275 by Dr Adequate
11-22-2011 1:02 PM


That was posted at 8:26 a.m. And yet at 9:57 a.m. you claim to have "read the book".
He was challenged to read Chapter 1. He responded that he had read Chapter 1. Since Chapter 1 is a subset of The Whole Book it would fallacious to assume that just because he HAD read Chapter 1 that also means he HAS NOT read The Whole Book. Indeed, anybody that has read The Whole Book could truthfully say 'I have already read Chapter 1' when challenged by someone to do so.

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Modulous
Member
Posts: 7801
From: Manchester, UK
Joined: 05-01-2005


Message 292 of 344 (641834)
11-22-2011 5:58 PM
Reply to: Message 282 by designtheorist
11-22-2011 3:18 PM


pobody's nerfect
However, your comment below is too high a standard
Why is it too high?
I do my best to present my case error free.
Naturally.
But it is impossible for anyone to avoid all errors.
I believe I said as much in my last post. But the onus is upon one's self to try and avoid as much error as possible, and critical thinking is key in this regard. The thinking should be critical in nature. One should always ask 'how do I know what I am claiming is true?' and 'how am I sure it is not false?' as minimum safeguards of critical thought.
Mistakes are going to happy.
And happy can keep them! Yes, I think you have proved that mistakes are going to happen.
This forum is about "Understanding through discussion." I want people to point out my errors, but it is unreasonable to expect me or anyone to never make errors.
I never suggested anyone should be error free. I just suggested that one should think critically even about (especially about!) ideas that coincide with one's own beliefs. Confirmation bias, and other such biases are an affliction we all need to develop the tools to combat.
But since we're talking about general errors in reasoning as well as strictly logical fallacies, I thought I'd discuss a mistake that you made, speculating on the forces that might have been behind it.

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Modulous
Member
Posts: 7801
From: Manchester, UK
Joined: 05-01-2005


(2)
Message 317 of 344 (642077)
11-25-2011 4:16 PM
Reply to: Message 314 by Wollysaurus
11-24-2011 10:28 PM


From a newby's perspective (having no formal classes or even necessarily training in "logical fallacies" to the extent that some here appear to have) I tend to view the use of techniques such as "argument from authority" and the like as more useful in terms of Rhetoric than actually proving that one side of the argument has more of a basis in fact than another.
This is so. Many sites that discuss logical fallacies warn of identifying them and leaving it at that. The sort of 'this is false because it is logical fallacy x' reasoning. As One Good Move states:
quote:
The names of the fallacies are for identification purposes only. They are not supposed to be flung around like argumentative broadswords. It is not sufficient to state that an opponent has committed such-and-such a fallacy. And it is not very polite.
There are some debators that do like to use logical fallacies as rhetorical swords, thinking that they are very clever for having identified them. But it is true: it is not sufficient in the world of rhetoric.

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