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#155 | ||
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"Richard B. Woods"
Aug 2002
Wisconsin USA
170148 Posts |
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There were alternative suppositions that also would have been more charitable, such as supposing that you needed to ask for clarification rather than make an accusation of fallacy. Quote:
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#156 | |
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"Richard B. Woods"
Aug 2002
Wisconsin USA
22·3·641 Posts |
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#157 | |||
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May 2003
7×13×17 Posts |
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Last fiddled with by Zeta-Flux on 2009-07-29 at 16:20 |
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#158 | |||
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"Richard B. Woods"
Aug 2002
Wisconsin USA
22·3·641 Posts |
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It's an exaggeration -- a purported portrayal of someone else's idea, but distorted to seem unreasonable. Even if that's a subconscious deception, I consider it non-innocent, because it's motivated by the desire to distort, not a desire to be honest. The portrayer of a "straw man" is not quoting or paraphrasing someone else's words as accurately, or even as neutrally, as possible. I don't view that charitably. Perhaps it is easy to fall into the subconscious habit of committing "straw men", especially if one grows up among folks who habitually use it, but it's still, at heart, no more excusable than habitual easy lying or habitual easy stealing, is it? I can view the reasons for development of a habit charitably in such a case, but not the continuation of that habit once it is challenged for what it is. That it's easy to be dishonest shouldn't cause us to excuse dishonesty, or consider it charitably, should it? (There may be other reasons, such as its intent, to consider dishonesty charitably in certain circumstances -- but not its ease.) Quote:
One can learn to modulate ones threshold of believability in this regard, so as to learn to more often ask oneself whether one correctly interprets a suspected fallacy. Quote:
Last fiddled with by cheesehead on 2009-07-29 at 17:47 |
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#159 | ||||
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May 2003
7·13·17 Posts |
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If you believe one must consciously, or subconsciously, distort the other's statement to commit the "straw man" fallacy, then we differ on the definition. Quote:
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P.S. I'd appreciate if you could answer the questions in the quiz, to get us a little back on topic. Thanks. Last fiddled with by Zeta-Flux on 2009-07-29 at 19:17 |
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#160 | |
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Jul 2007
Tennessee
25×19 Posts |
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#161 | |||||||||
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"Richard B. Woods"
Aug 2002
Wisconsin USA
170148 Posts |
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It's not so much that the question is poorly worded as that there may be a formal definition of "prosperous democracy" that does not involve a particular dollar figure. Your $5,000 figure seems to implicitly assume that the prosperity in question is a per-capita or per-household average rather than a national GNP figure. However, one could replace the $5,000 by an equivalent figure proportional to GNP in that case, so that's of no consequence. But why should we change the prosperity cutoff at all? Your "robust" reason doesn't really apply here. You'd just be restricting the data to a different range of prosperity, not discarding truly anomalous data points. Perhaps it would show that the correlation coefficients differed significantly between prosperity ranges, but it wouldn't test the robustness of the coefficients over any particular range. Quote:
However, there is a problem with eyeballing the article's charts without having the corresponding actual figures: Not all letters are shown on all graphs. Perhaps when two or more nations would be plotted at the same position on a graph, only one of their letters can be shown. For example, the graph I just mentioned shows only 11 letters, not 18. So we don't know where seven of the nations would be on the graph. That makes it 2 at 50%, 1 above 50%, 8 under 50%, and 7 unknown. The upper left graph of Figure 2 seems to show 17 letters. Two are at 50%, two are above 50%, 13 are under 50%, and one is unknown -- better than in Figure 1. Figure 3's upper left shows 17 also, with 1 at 50%, 1 very closely under 50%, 1 above 50%, 14 under 50%, and 1 unknown. Figures 4 and 5 may show all 18, with the counts same as Figure 3 except 2 above 50% and none unknown. Quote:
I question the motive for dropping the "most extreme" nations at all. The reason for dropping outliers in experimental data is that they are likely to be caused by errors in measurement that did not affect the other data points - statistical error. Furthermore, these dropping-the-outlier cases are cases in which all the measurements are of the same phenomenon or event or item, so there's no inherent reason to think they'd differ if all the measurements had been infinitely accurate and precise. That's not the case here. There really are differences between the populaces of different nations. You've introduced no evidence that the data points you want to drop are the result of measurement error. In this case, the differing numbers for different nations correspond to different realities, not different measurements of the same thing. Sure, there's some error range for each nation's number, but what you're proposing is to drop outliers with no regard to their distance from the other data points relative to error-of-measurement range, but just because of their values. It still seems to me that the only reasons you have for proposing to drop outliers in this case are that they don't fit your preferred result, and that you're mimicking the dropping of statistical outliers without having the reason for dropping that that practice requires. (Again, you've presented no evidence at all that the measurements for those nations are any less accurate than the measurements for other nations, so it can't be because of measurement error.) Sorry for the harsh words, but I've seen no reason why they are wrong. Your proposals have never mentioned any reason except for their outlying status, and that's not a good enough reason to drop them. You've never mentioned any reason to think that the numbers you want to drop are inaccurate. There's a famous case in science that illustrates bias toward an expected result. I'll quote from Richard Feynman's famous "Cargo Cult Science" speech at http://www.lhup.edu/~DSIMANEK/cargocul.htm Quote:
The later discovery that Millikan had a systematic error in his results because, as noted by Feynman, he used an incorrect value for air viscosity is a separate matter from bias-toward-expected-result. Quote:
I could try measuring the positions of the plotted data points, but there'd still be the question of which method of correlation to use. Just by eyeballing, it looks like the correlation coefficient in the upper left graph of Figure 2 would be positive; for the upper right graph, positive but less than for the upper left; for the lower right graph, positive; for the lower middle graph, negative; for the lower right graph, negative. Quote:
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Last fiddled with by cheesehead on 2009-07-30 at 06:17 Reason: Trying to fix the URL link |
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#162 | |
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"Richard B. Woods"
Aug 2002
Wisconsin USA
22·3·641 Posts |
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I invite you to present good reasons for dropping the outliers that you want to drop, to replace my harsh speculations. (You've always been free to do so, but I want to make it explicit.) Your repeated proposals to drop certain data points, but without giving any reason why their quality differs from any other data point, look ... odd. Why are the data points you want to drop inferior to any other data points in the article? You've criticized this article for unscientific use of statistics, yet you repeatedly propose your own unscientific use of data points. Why this seeming contradiction? What is the reason? Perhaps I've been uncharitable in my interpretation of your proposals to drop data points, but unless/until you present good reasons for carrying out your proposal, it's difficult to arrive at any more-charitable interpretation than that you want to shape the data to fit your own preconceptions. You've accused the author of bias ... but exactly what bias do you suspect he had? Say it straight out, please. You gave a list of four reasons for saying that the article was unscientific. I've refuted three of them, and am still waiting for detail on the Simpson's law claim. Last fiddled with by cheesehead on 2009-07-30 at 13:43 |
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#163 | |
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May 2003
7·13·17 Posts |
cheesehead,
I found your last two posts very informative. Thank your for taking the time to answer the questions on the quiz. As you (repeatedly) have asked me to provide some sense to the questions, let me do so now. Point #1: There was absolutely no reason at all for dropping the two "outliers". You are entirely correct that that would be a bad thing to do, in many ways and contexts. Even if we changed the outliers from the extremal points to those with the most variance from the mean (or some other statistical measure), it would still be a bad idea on many fronts. One doesn't simply drop data points, without a good reason to believe that the data points were due to faulty measuring. [And even then, one should repeat the measurement, after fixing the fault. etc...] So, why did I ask you to do it? To see your response, of course. I hinted at this, when I first created the quiz. In one sense, the questions had nothing to do with the paper, per se. Now, what was your response? You, yourself, characterized them as "harsh speculations." You felt justified in forming opinions about the intent of the questions, due to your understanding of certain principles of statistics. I similarly understood one simple fact: correlation does not imply causation. Yet, when I read some of the article in question, he seemed to be saying exactly that. For example, the author writes "The view of the U.S. as a ‘shining city on the hill’ to the rest of the world is falsified." For more such quotes see section 12 in http://moses.creighton.edu/JRS/2006/2006-1.html In fact, they write "[Paul's] methodological problems do not allow for any conclusive statement to be advanced regarding the various hypotheses Paul seeks to demonstrate or falsify." Point #2: You approached the quiz with a critical eye. You looked for problems with the questions, from the outset. Yet, you seemingly passed over some of the glaring problems you uncovered in the article. For example, how does the author define prosperity? You give him the most charitable interpretation: prosperity must mean something generally understood by the specific social scientists he is talking to; even though Paul is a freelance paleontologist. But this isn't the case. This is, in fact, one of the points brought up in http://moses.creighton.edu/JRS/2006/2006-1.html, that G. Paul is conceptually ambiguous. You similarly give him a free pass when even basic statistics are not present in the article. See http://moses.creighton.edu/JRS/pdf/2006-7.pdf for another response on that front; revealing further complexities. Quote:
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#164 | |
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May 2003
30138 Posts |
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#165 |
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"Richard B. Woods"
Aug 2002
Wisconsin USA
11110000011002 Posts |
Twice I've had a post here that I composed off-line, as per good suggestion by Zeta-Flux. In each case, it looked so different on-line that I kept revising and revising and revising. So I've just replaced it with this for now.
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