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Notes on Logic:

Informal, Deductive, and Inductive

Posts tagged with "division"

How Tom Tancredo "Divides" a Red Herring while Grinding his Axe

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Colorado Congressman Tom Tancredo answers Jeff Young's question, "What evidence would convince you that global warming is a serious threat to the planet?" as follows:

I have no doubt that global warming exists. I just question the cause and what we can do to ameliorate it. But I wonder why the Sierra Club isn't going crazy about the environmental aspects of massive immigration into the U.S. The fact is, Americans consume more energy than anyone else, so if a person moves here from another country, they automatically become bigger polluters.


("10 Questions," Time 169 No. 24 (11 June 2007), 8.)

Congressman Tancredo initially sidesteps Mr. Young's question by granting that global warming is a problem presumably without political import since he thinks the causes and cures of global warming are unknown. Generalizing, however, that the problem of global warming is an environmental issue, Congressman Tancredo implicitly proceeds to assign the cause of global warming to the pollution caused by energy consumption in the U.S. from the increase in population by immigration. (Time's preface to the article notes that Tom Tancredo is "hoping to win over primary voters with his hard-line stance on illegal immigration" (Ibid, 8)).

So in grinding his axe, the Congressman commits both the fallacy of division and the red herring fallacy. The fallacy of division is a fallacy committed by reasoning from the fact that since the whole of something has one or more specific characteristics, the parts must also have one or more specific characteristics as well.

In this case, Mr. Tancredo reasons that since the property of high energy consumption and the consequent property of pollution is true collectively of persons living in the U.S., then these same properties must be true as well for each individual distributively living in the U.S. Since legal immigrants in the U.S. are persons living in the U.S., the Congressman fallaciously concludes these immigrants necessarily become bigger polluters when they cross the border.

The red herring fallacy, of course, occurs in the intentional shift from the problem of global warming to the problem of illegal immigration in the U.S. The red herring fallacy is the kind of ignoratio elenchi or fallacy of irrelevant conclusion in which the ultimate conclusion is a diversion from the original question. The fallacy gets its name from a folklore account of intentionally dragging a herring across the trail of a fox in order to divert the foxhounds.

Nanotechnology and Emergent Properties

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With respect to composition, the usual heuristic is to attempt to model the higher level of phenomena on the basis of a lower level of phenomena (sometimes termed, "a dimension less than the one under examination").

With respect to nanoparticles safety concerns arise from surprising and unpredictable toxicological qualities on biological cells:

Their small size, large surface area, and unusual structures endow them with electronic, optical, and catalytic properties not found in their parent materials.

. (Aimee Cunningham, "Particular Problems: Assessing Risks of Nanotechnology," Science News, 169 No. 18 (6 May 2006), 280.)

Nanoparticles can be more toxic than the normally occurring larger particles, and, additionally, nanoparticles can exhibit novel electrical and catalytic properties which make them toxic in unpredictable ways.

Empirical research seems to be the method of discovery of the special properties of nanoparticles. By working from chemistry alone, or from physics alone, the properties of nanoparticles do not seem to be predictable. It seems promising that both sciences will benefit from another direction of discovery: examining seemingly emergent properties at a lower scale of phenomena.
November 2009
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