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Carl Sagan's Baloney Detection Kit
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tmpThe time has come for this reminder of a few things with which anyone who argues seriously about anything should be intimately familiar. These are fundamental principles of reasoned debate, yet they are often wantonly disregarded. People who deny the reality of HBD are quite often particularly guilty of this, as we saw with the recent posts by Virgle Kent about the “Truth” Behind the HBD cult, parts 1 and 2. But we also saw this at work in the Daily Kos post “Racism has a new name: HBD“.

Though, make no mistake, many HBD proponents are guilty of using less than sound reasoning in their arguments as well.

This Baloney Detection Kit was written by the late astronomer Carl Sagan and was featured in his 1995 book The Demon-Haunted World: Science as a Candle in the Dark, which sought to popularize the scientific method and skeptical thinking. These are key tenets at the root of any reasoned argument.

The kit is as follows:

What skeptical thinking boils down to is the means to construct, and to understand, a reasoned argument and — especially important — to recognize a fallacious or fraudulent argument. The question is not whether we like the conclusion that emerges out of a train of reasoning, but whether the conclusion that emerges out of a train follows from the premise of starting point and whether that premise is true.

Among the tools:

  • Wherever possible there must be independent confirmation of the “facts”.
  • Encourage substantive debate on the evidence by knowledgeable proponents of all points of view.
  • Arguments from authority carry little weight — “authorities” have made mistakes in the past. They will do so again in the future. Perhaps a better way to say it is that in science there are no authorities; at most, there are experts.
  • Spin more than one hypothesis. If there’s something to be explained, think of all the different ways in which it could be explained. Then think of tests by which you might systematically disprove each of the alternatives. What survives, the hypothesis that resists disproof in this Darwinian selection among “multiple working hypotheses,” has a much better chance of being the right answer than if you had simply run with the first idea that caught your fancy.
  • Try not to get overly attached to a hypothesis just because it’s yours. It’s only a way station in the pursuit of knowledge. Ask yourself why you like the idea. Compare it fairly with the alternatives. See if you can find reasons for rejecting it. If you don’t, others will.
  • Quantify. If whatever it is you’re explaining has some measure, some numerical quantity attached to it, you’ll be much better able to discriminate among competing hypotheses. What is vague and qualitative is open to many explanations. Of course there are the truths to be sought in the many qualitative issues we are obliged to confront, but finding them is more challenging.
  • If there’s a chain of argument, every link in the chain must work (including the premise) — not just most of them.
  • Occam’s Razor. This convenient rule-of-thumb urges us when faced with two hypotheses that explain the data equally well to choose the simpler.
  • Always ask whether the hypothesis can be, at least in principle, falsified. Propositions that are untestable, unfalsifiable are not worth much. Consider the grand idea that our Universe and everything in it is just an elementary particle — an electron, say — in a much bigger Cosmos. But if we can never acquire information from outside our Universe, is not the idea incapable of disproof? You must be able to check assertions out. Inveterate skeptics must be given the chance to follow your reasoning, to duplicate your experiments and see if they get the same result.

In addition to teaching us what to do when evaluating a claim to knowledge, any good baloney detection kit must also teach us what not to do. It helps us recognize the most common and perilous fallacies of logic and rhetoric. Many good examples can be found in religion and politics, because their practitioners are so often obliged to justify two contradictory propositions. Among these fallacies are:

  • ad hominem — Latin for “to the man,” attacking the arguer and not the argument (e.g. The Reverend Dr. Smith is a known Biblical fundamentalist, so her objections to evolution need not be taken seriously);
  • argument from authority (e.g., President Richard Nixon should be re-elected because he has a secret plan to end the war in Southeast Asia — but because it was secret, there was no way for the electorate to evaluate it on its merits; the argument amounted to trusting him because he was President; a mistake, as it turned out);
  • argument from adverse consequences (e.g., A God meting out punishment and reward must exist, because if He didn’t, society would be much more lawless and dangerous – perhaps even ungovernable. Or: The defendant in a widely publicized murder trial must be found guilty; otherwise, it will be an encouragement for other men to murder their wives);
  • appeal to ignorance — the claim that whatever has not been proved false must be true, and vice versa (e.g., There is no compelling evidence that UFOs are not visiting the Earth; therefore UFOs exist — and there is intelligent life elsewhere in the Universe. Or: There may be seventy kazillion other worlds, but not one is known to have the moral advancement of the Earth, so we’re still central to the Universe.) This impatience with ambiguity can be criticized in the phrase: absence of evidence is not evidence of absence.
  • special pleading, often to rescue a proposition in deep rhetorical trouble (e.g., How can a merciful God condemn future generations to torment because, against orders, one woman induced one man to eat an apple? Special plead: you don’t understand the subtle Doctrine of Free Will. Or: How can there be an equally godlike Father, Son, and Holy Ghost in the same Person? Special plead: You don’t understand the Divine Mystery of the Trinity. Or: How could God permit the followers of Judaism, Christianity, and Islam — each in their own way enjoined to heroic measures of loving kindness and compassion — to have perpetrated so much cruelty for so long? Special plead: You don’t understand Free Will again. And anyway, God moves in mysterious ways.)
  • begging the question, also called assuming the answer (e.g., We must institute the death penalty to discourage violent crime. But does the violent crime rate in fact fall when the death penalty is imposed? Or: The stock market fell yesterday because of a technical adjustment and profit-taking by investors — but is there any independent evidence for the causal role of “adjustment” and profit-taking; have we learned anything at all from this purported explanation?);
  • observational selection, also called the enumeration of favourable circumstances, or as the philosopher Francis Bacon described it, counting the hits and forgetting the misses (e.g., A state boasts of the Presidents it has produced, but is silent on its serial killers);
  • statistics of small numbers — a close relative of observational selection (e.g., “They say 1 out of every 5 people is Chinese. How is this possible? I know hundreds of people, and none of them is Chinese. Yours truly.” Or: “I’ve thrown three sevens in a row. Tonight I can’t lose.”);
  • misunderstanding of the nature of statistics (e.g., President Dwight Eisenhower expressing astonishment and alarm on discovering that fully half of all Americans have below average intelligence);
  • inconsistency (e.g., Prudently plan for the worst of which a potential military adversary is capable, but thriftily ignore scientific projections on environmental dangers because they’re not “proved”. Or: Attribute the declining life expectancy in the former Soviet Union to the failures of communism many years ago, but never attribute the high infant mortality rate in the United States (now highest of the major industrial nations) to the failures of capitalism. Or: Consider it reasonable for the Universe to continue to exist forever into the future, but judge absurd the possibility that it has infinite duration into the past
  • non sequitur — Latin for “It doesn’t follow” (e.g., Our nation will prevail because God is great. But nearly every nation pretends this to be true; the Germans formulation was “Gott mit uns”). Often those falling into the non sequitur fallacy have simply failed to recognize alternative possibilities
  • post hoc, ergo propter hoc – Latin for “It happened after, so it was caused by” (e.g., Jaime Cardinal Sin, Archbishop of Manila: “I know of … a 26-year old who looks 60 because she takes [contraceptive] pills.” Or: Before women got the vote, there were no nuclear weapons);
  • meaningless question (e.g., What happens when an irresistible force meets an immovable object? But if there is such a thing as an irresistible force there can be no immovable objects, and vice versa);
  • excluded middle, or false dichotomy — considering only the two extremes in a continuum of intermediate possibilities (e.g., “Sure, take her side; my husband’s perfect; I’m always wrong.” Or: “Either you love your country or you hate it.” Or: “If you’re not part of the solution, you’re part of the problem”);
  • short-term vs. long-term — a subset of the excluding middle, but so important I’ve pulled it out for special attention (e.g., We can’t afford programs to feed malnourished children and educate pre-school kids. We need to urgently deal with crime on the streets. Or: Why explore space or pursue fundamental science when we have so huge a budget deficit?);
  • slippery slope, related to excluded middle (e.g., If we allow abortion in the first week of pregnancy, it will be impossible to prevent the killing of a full-term infant. Or, conversely: If the state prohibits abortion even in the ninth month, it will soon be telling us what to do with our bodies around the time of conception);
  • confusion of correlation and causation (e.g., A survey shows that more college graduates are homosexual than those with lesser education; therefore education makes people gay. Or: Andean earthquakes are correlated with closest approaches of the planet Uranus; therefore — despite the absence of any such correlation for the nearer, more massive planet Jupiter — the latter causes the former)
  • straw man — caricaturing a position to make it easier to attack (e.g., Scientists suppose that living things simply fell together by chance — a formulation that wilfully ignores the central Darwinian insight, that Nature ratchets up by saving what works and discarding what doesn’t. Or — this is also a short-term/long-term fallacy — environmentalists care more for snail darters and spotted owls than they do for people)
  • suppressed evidence, or half-truths (e.g., An amazingly accurate and widely quoted “prophecy” of the assassination attempt on President Regan is shown on television; but – an important detail — was it recorded before or after the event? Or: These government abuses demand revolution, even if you can’t make an omelette without breaking some eggs. Yes, but is this likely to be a revolution in which far more people are killed than under the previous regime? What does the experience of other revolutions suggest? Are all revolutions against oppressive regimes desirable and in the interests of the people?);
  • weasel words (e.g., The separation of powers of the U.S. Constitution specifies that the United States may not conduct a war without a declaration of Congress. On the other hand, Presidents are given control of foreign policy and the conduct of wars, which are potentially powerful tools for getting themselves re-elected. Presidents of either political party may therefore be tempted to arrange wars while waving the flag and calling the wars something else — “police actions,” “armed incursions,” “protective reaction strikes,” “pacification,” “safeguarding American interests,” and a wide variety of “operations,” such as “Operation Just Cause.” Euphemisms for war are one of a broad class of reinventions of language for political purposes. Talleyrand said, “An important art of politicians is to find new names for institutions which under old names have become odious to the public”).

There’s a couple fallacies I’d like to add to that list:

  • Appeal to the numbers fallacy (argumentum ad numerum): A lot of people believe it, hence it must be true – ‘fraid not.
  • Red herring: raising an irrelevant point that distracts from the truth of the proposition at hand. Several of the above fallacies are types of red herrings.
  • Argument from incredulity: a version of the appeal to ignorance, where one’s own disbelief in a claim is asserted as evidence of the claim’s falsehood (e.g. “I can’t see how life could have arose from non-living substances, hence it could not have happened”).
  • EDIT (8/31/13), False compromise fallacy: also known as the argument to moderation. The converse of the excluded middle fallacy, this is a claim that the truth necessarily lies between two opposing positions. Afraid not – just because there is a disagreement between two claims doesn’t mean elements of both are correct. Just as a computer data bit cannot have a value between 0 and 1, sometimes, one position is plain wrong, and the other, perhaps right.
  • Is-ought fallacy: Claiming that because something is a certain way, it then follows that this is how that thing should be. This was recently employed by a proponent of immigration against me in an argument on Twitter. The naturalistic fallacy is a version of this, which is the idea that because something is natural, it is necessarily good (e.g. “I’m against vaccination for my child because vaccines are unnatural”). Certain proponents of HBD, particularly the more White Nationalist voices, are also guilty of committing this fallacy (for example, pointing out that since ethnocentrism/racism is a natural feature of the human psyche, it then follows that this is necessarily a good thing and should be embraced.)
  • Ought-is fallacy: The converse of the former: the claim that because something should be a certain way, it necessarily is that way. This is also known as the moralistic fallacy, and is essentially at the root of HBD-denial. Because it would be better if all human groups have the same abilities and potential, it is then presupposed that they in fact do.
  • “Reductio ad Hitlerum”: Particularly special for HBD, this is the claim that because Adolf Hiter and/or the Nazis believed or practiced something, then that thing is necessarily wrong and/or evil. (e.g., Hitler believed in distinct human races, so anyone who believes this must be a crackpot and/or neo-Nazi.)

Learn these. Know these. Stick to these principles in your debates, and avoid invoking logical fallacies.

As an additional point, please be aware of my funding drive! Thanks for anything you have to offer!

(Republished from JayMan's Blog by permission of author or representative)
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  1. Anonymous • Disclaimer says:

    The worst though ain’t any particular fallacy (against which any conversation between fallacy-aware, minimally intelligent, basically honest people can be easily guarded), put tactics such as attempted overwhelming by sheer volume of crap (such as employed by the creationists) or hypercomplicated absurdity (such as employed by postmodernists). Any human being shouldn’t have to suffer attempted discussion with such types.. treating them as capable of honest, logical discourse simply won’t do, and I don’t think that requiring anything else than ad hominems (the more physical, the better) would be fair to the rest of us.

    • Replies: @JayMan
  2. Anonymous • Disclaimer says:

    This is a useful catalogue of fallacies. I don’t think the internet should be regulated, but if it were going to be regulated, making everyone read this would be a good place to start.

    Seems to me the two items in this “kit” most relevant to the debate over HDB, at least in the area of race and IQ, are Occam’s Razor and “argument from adverse consequences.”

    • Replies: @JayMan
  3. Seeing your disagreement with T., I thought you might be interested in all of Dweck’s actual papers here:

    Don’t quote me on this, but I don’t see that any of her work tracks actual IQ scores longitudinally.

    • Replies: @JayMan
  4. It seems like things such as intensive parenting, intensive education etc. can all have a pretty significant short term impact, but it all tends to fade as people get older. Dweck’s priming exercises seem to be similar.

    This isn’t to say that things in the social environment can’t have a significant impact in certain areas, it’s just that intelligence doesn’t seem to be one of those areas.

  5. All wonderful, but so hard to hear from the lips of Sagan, who offended on many of these grounds himself, and often. He was one of those who saw through everyone else but was opaque to himself. As are we all to some extent, but his was legendary.

  6. Anonymous • Disclaimer says:

    Failure to understand HBD aside, Rawness is an excellent site. I highly recommend reading the entire thing. It’s not surprising that he can’t connect the dots from his evolutionary analysis of women to evolutionary analysis of races, but his stuff on women and psychology is great.

    • Replies: @JayMan
  7. […] Carl Sagan’s Baloney Detection Kit – from jayman! (i LOVE baloney! fried baloney sandwiches — mmmmmm! (^_^) […]

  8. […] In response to the HBD discussion at The Nexxxxxxxt Level Uppppp, blogger JayMan provides a list of logical fallacies from Carl Sagan.  He also adds a few of his […]

  9. JayMan says: • Website

    Thank you! Excellent list, I’ll edit my post to incorporate them.

  10. JayMan says: • Website

    Yeah I’ve read his site and some of his stuff is pretty interesting. He’s much more interesting when he’s not trying to be the armchair psychiatrist…

  11. JayMan says: • Website
    @The Man Who Was . . .

    Thanks! Yes they’ve come in handy. I didn’t notice anything longitudinal either. I was planning on writing a post looking at the non-genetic component of behavioral traits, and Dweck’s stuff was going to be mentioned. Though it seems more and more that there really isn’t as much there it’s been commonly hyped.

  12. JayMan says: • Website

    This is a useful catalogue of fallacies. I don’t think the internet should be regulated, but if it were going to be regulated, making everyone read this would be a good place to start.

    Thanks! That’s a great vote of confidence!

    Seems to me the two items in this “kit” most relevant to the debate over HDB, at least in the area of race and IQ, are Occam’s Razor and “argument from adverse consequences.”

    Indeed. Let’s not forget good old reductio ad Hitlerum.

  13. JayMan says: • Website

    It can be a pain. I’ve had my experience…

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