Tag Archives: argumentation

Robin Hanson

Clearly, Eliezer should seriously consider devoting himself more to writing fiction. But it is not clear to me how this helps us overcome biases any more than any fictional moral dilemma. Since people are inconsistent but reluctant to admit that fact, their moral beliefs can be influenced by which moral dilemmas they consider in what order, especially when written by a good writer. I expect Eliezer chose his dilemmas in order to move readers toward his preferred moral beliefs, but why should I expect those are better moral beliefs than those of all the other authors of fictional moral dilemmas? If I’m going to read a literature that might influence my moral beliefs, I’d rather read professional philosophers and other academics making more explicit arguments. In general, I better trust explicit academic argument over implicit fictional “argument.”

Robin Hanson, comment to Eliezer Yudkowsky, Epilogue: Atonement, LessWrong, February 6, 2009

Nick Bostrom

[C]onsider the convention against the use of ad hominem arguments in science and many other arenas of disciplined discussion. The nominal justification for this rule is that the validity of a scientific claim is independent of the personal attributes of the person or the group who puts it forward. Construed as a narrow point about logic, this comment about ad hominem arguments is obviously correct. But it overlooks the epistemic significance of heuristics that rely on information about how something was said and by whom in order to evaluate the credibility of a statement. In reality, no scientist adopts or rejects scientific assertions solely on the basis of an independent examination of the primary evidence. Cumulative scientific progress is possible only because scientists take on trust statements made by other scientists—statements encountered in textbooks, journal articles, and informal conversations around the coffee machine. In deciding whether to trust such statements, an assessment has to be made of the reliability of the source. Clues about source reliability come in many forms—including information about factors, such as funding sources, peer esteem, academic affiliation, career incentives, and personal attributes, such as honesty, expertise, cognitive ability, and possible ideological biases. Taking that kind of information into account when evaluating the plausibility of a scientific hypothesis need involve no error of logic.

Why is it, then, that restrictions on the use of the ad hominem command such wide support? Why should arguments that highlight potentially relevant information be singled out for suspicion? I would suggest that this is because experience has demonstrated the potential for abuse. For reasons that may have to do with human psychology, discourses that tolerate the unrestricted use of ad hominem arguments manifest an enhanced tendency to degenerate into personal feuds in which the spirit of collaborative, reasoned inquiry is quickly extinguished. Ad hominem arguments bring out our inner Neanderthal.

Nick Bostrom, ‘Technological Revolutions: Ethics and Policy in the Dark’, in Nigel Cameron & Ellen Mitchell (eds.), Nanoscale: Issues and Perspectives for the Nano Century, Hoboken, New Jersey, 2007, pp. 141-142

Michael Huemer

It is not the case that whenever an argument deploys a premise that directly and obviously contradicts an opponent’s position, the argument begs the question. Still less is it true that whenever a consistent opponent would reject at least one of an argument’s premises, the argument begs the question.

Michael Huemer, Ethical Intuitionism, Basingstoke, Hampshire, 2005, p. 69

David Enoch

Often when reading philosophy one gets the feeling that the writer cares more deeply about his or her conclusion than about the argument, so that if the argument can be shown to fail, the philosopher whose argument it is will simply proceed to look for other arguments rather than take back his or her commitment to the conclusion.

David Enoch, ‘An Outline of an Argument for Robust Metanormative Realism’, Oxford Studies in Metaethics, vol. 2 (2007), p. 23

Jeff McMahan

[A]lthough I defend the permissibility of abortion and thus welcome the introduction of the abortion pill, I do not believe the debate should end until we have the kind of intellectual and moral certainty about abortion that we have about slavery. It is important to notice that the ostensible victims of abortion—fetuses—are not parties to the debate, while of those who are involved in it, the only ones who have a significant personal interest or stake in the outcome are those who would benefit from the practice. There is therefore a danger that abortion could triumph in the political arena simply because it is favored by self-interest and opposed only by ideals. We should therefore be wary of the possibility of abortion becoming an unreflective practice, like meat eating, simply because it serves the interests of those who have the power to determine whether it is practiced.

Jeff McMahan, The Ethics of Killing: Problems at the Margins of Life, Oxford, 2002, p. viii

Thomas Nagel

[T]he appeal to reason is implicitly authorized by the [subjectivist] challenge itself, so this is really a way of showing that the challenge is unintelligible. The charge of begging the question implies that there is an alternative—namely, to examine the reasons for and against the claim being challenged while suspending judgment about it. For the case of reasoning itself, however, no such alternative is available, since any considerations against the objective validity of a type of reasoning are inevitably attempts to offer reasons against it, and these must be rationally assessed. The use of reason in the response is not a gratuitous importation by the defender: It is demanded by the character of the objections offered by the challenger.

Thomas Nagel, The Last Word, New York, 1997, p. 24

John Stuart Mill

The very words necessary to express the task I have undertaken, show how arduous it is. But it would be a mistake to suppose that the difficulty of the case must lie in the insufficiency or obscurity of the grounds of reason on which my convictions. The difficulty is that which exists in all cases in which there is a mass of feeling to be contended against. So long as opinion is strongly rooted in the feelings, it gains rather than loses instability by having a preponderating weight of argument against it. For if it were accepted as a result of argument, the refutation of the argument might shake the solidity of the conviction; but when it rests solely on feeling, the worse it fares in argumentative contest, the more persuaded adherents are that their feeling must have some deeper ground, which the arguments do not reach; and while the feeling remains, it is always throwing up fresh entrenchments of argument to repair any breach made in the old.

John Stuart Mill, The Subjection of Women, London, 1869, chap. 1