Carl Sagan has a place in history as one of the greatest communicat...
Sagan was born and largely grew up in Brooklyn; his father, Samuel ...
I would love to see a citation for this claim: "More than a thir...
We would like to hear about this from Fermat too...
Among the things that Knight claims about Ramtha, are that he spe...
If Carl were alive for the misinformation campaigns spread by opioi...
I wonder what Carl would think of Instagram influencers...
The sugar pill can control for the placebo effect.
The infant mortality rate is a bad example because the other indust...
A similar argument can be made for "statistical significance" at a ...
Randomized control trials (RCTs) provide one of the most common mea...
I am curious how many people died of smoking worldwide in 2018. ...
The Fine Art of Baloney Detection
Carl Sagan
The human understanding is no dry light, but receives an infusion from the will and affections;
whence proceed sciences which may be called “sciences as one would.” For what a man had rather
were true he more readily believes. Therefore he rejects difficult things from impatience of research;
sober things, because they narrow hope; the deeper things of nature, from superstition; the light
of experience, from arrogance and pride, lest his mind should seem to be occupied with things
mean and transitory; things not commonly believed, out of deference to the opinion of the vulgar.
Numberless in short are the ways, and sometimes imperceptible, in which the affections colour
and infect the understanding.
Francis Bacon, Novum Organon (1620)
My parents died years ago. I was very close to them. I still miss them terribly. I know I always will. I long to
believe that their essence, their personalities, what I loved so much about them, are—really and truly—still in
existence somewhere. I wouldnt ask very much, just five or ten minutes a year, say, to tell them about their
grandchildren, to catch them up on the latest news, to remind them that I love them. Theres a part of me—no
matter how childish it sounds—that wonders how they are. “Is everything all right?” I want to ask. The last words
I found myself saying to my father, at the moment of his death, were “Take care.
Sometimes I dream that I’m talking to my parents, and suddenly—still immersed in the dreamwork—I’m
seized by the overpowering realization that they didnt really die, that it’s all been some kind of horrible mistake.
Why, here they are, alive and well, my father making wry jokes, my mother earnestly advising me to wear a
muffler because the weather is chilly. When I wake up I go through an abbreviated process of mourning all over
again. Plainly, theres something within me that’s ready to believe in life after death. And it’s not the least bit
interested in whether there’s any sober evidence for it.
So I dont guffaw at the woman who visits her husband’s grave and chats him up every now and then, maybe
on the anniversary of his death. It’s not hard to understand. And if I have difficulties with the ontological status
of who she’s talking to, that’s all right. That’s not what this is about. This is about humans being human. More
than a third of American adults believe that on some level they’ve made contact with the dead. The number
seems to have jumped by 15 percent between and 1988. A quarter of Americans believe in reincarnation.
But that doesnt mean I’d be willing to accept the pretensions of a “medium,” who claims to channel the
spirits of the dear departed, when I’m aware the practice is rife with fraud. I know how much I want to believe
that my parents have just abandoned the husks of their bodies, like insects or snakes molting, and gone
somewhere else. I understand that those very feelings might make me easy prey even for an unclever con, or for
normal people unfamiliar with their unconscious minds, or for those suffering from a dissociative psychiatric
disorder. Reluctantly, I rouse some reserves of skepticism.
How is it, I ask myself, that channelers never give us verifiable information otherwise unavailable? Why does
Alexander the Great never tell us about the exact location of his tomb, Fermat about his Last Theorem, John
Wilkes Booth about the Lincoln assassination conspiracy, Hermann Goring about the Reichstag fire? Why dont
Sophocles, Democritus, and Aristarchus dictate their lost books? Dont they wish future generations to have
access to their masterpieces?
If some good evidence for life after death were announced, Id be eager to examine it; but it would have to be
real scientific data, not mere anecdote. As with the face on Mars and alien abductions, better the hard truth, I say,
than the comforting fantasy. And in the final tolling it often turns out that the facts are more comforting than the
The fundamental premise of “channeling,” spiritualism, and other forms of necromancy is that when we die
we dont. Not exactly. Some thinking, feeling, and remembering part of us continues. That whatever-it-is—a soul
or spirit, neither matter nor energy, but something else—can, we are told, re-enter the bodies of human and other
beings in the future, and so death loses much of its sting. Whats more, we have an opportunity, if the spiritualist
or channeling contentions are true, to make contact with loved ones who have died.
J. Z. Knight of the State of Washington claims to be in touch with a 35,000-year-old somebody called
“Ramtha.” He speaks English very well, using Knight’s tongue, lips and vocal chords, producing what sounds to
me to be an accent from the Indian Raj. Since most people know how to talk, and many—from children to
professional actors—have a repertoire of voices at their command, the simplest hypothesis is that Ms. Knight
makes “Ramtha” speak all by herself, and that she has no contact with disembodied entities from the Pleistocene
Ice Age. If theres evidence to the contrary, I’d love to hear it. It would be considerably more impressive if Ramtha
could speak by himself, without the assistance of Ms. Knights mouth. Failing that, how might we test the claim?
(The actress Shirley MacLaine attests that Ramtha was her brother in Atlantis, but thats another story.)
Suppose Ramtha were available for questioning. Could we verify whether he is who he says he is? How does
he know that he lived 35,000 years ago, even approximately? What calendar does he employ? Who is keeping
track of the intervening millennia? Thirty-five thousand plus or minus what? What were things like 35,000 years
ago? Either Ramtha really is 35,000 years old, in which case we discover something about that period, or he’s a
phony and he’ll (or rather she’ll) slip up.
Where did Ramtha live? (I know he speaks English with an Indian accent, but where 35,000 years ago did they
do that?) What was the climate? What did Ramtha eat? (Archaeologists know something about what people ate
back then.) What were the indigenous languages, and social structure? Who else did Ramtha live with—wife, wives,
children, grandchildren? What was the life cycle, the infant mortality rate, the life expectancy? Did they have birth
control? What clothes did they wear? How were the clothes manufactured? What were the most dangerous preda-
tors? Hunting and fishing implements and strategies? Weapons? Endemic sexism? Xenophobia and ethnocentrism?
And if Ramtha came from the “high civilization” of Atlantis, where are the linguistic, technological, historical and
other details? What was their writing like? Tell us. Instead, all we are offered are banal homilies.
Here, to take another example, is a set of information channeled not from an ancient dead person, but from
unknown non-human entities who make crop circles, as recorded by the journalist Jim Schnabel:
We are so anxious at this sinful nation spreading lies about us. We do not come in machines, we do
not land on your earth in machines We come like the wind. We are Life Force. Life Force from
the ground Come here We are but a breath away a breath away we are not a million
miles away a Life Force that is larger than the energies in your body. But we meet at a higher
level of life … We need no name. We are parallel to your world, alongside your world The walls
are broken. Two men will rise from the past … the great bear … the world will be at peace.
People pay attention to these puerile marvels mainly because they promise something like old-time religion,
but especially life after death, even life eternal.
A very different prospect for something like eternal life was once proposed by the versatile British scientist
J.B.S. Haldane, who was, among many other things, one of the founders of population genetics. Haldane
imagined a far future when the stars have darkened and space is mainly filled with a cold, thin gas. Nevertheless,
if we wait long enough statistical fluctuations in the density of this gas will occur. Over immense periods of time
the fluctuations will be sufficient to reconstitute a Universe something like our own. If the Universe is infinitely
old, there will be an infinite number of such reconstitutions, Haldane pointed out.
So in an infinitely old universe with an infinite number of appearances of galaxies, stars, planets, and life, an
identical Earth must reappear on which you and all your loved ones will be reunited. I’ll be able to see my parents
again and introduce them to the grandchildren they never knew. And all this will happen not once, but an
infinite number of times.
Somehow, though, this does not quite offer the consolations of religion. If none of us is to have any recollection
of what happened this time around, the time the reader and I are sharing, the satisfactions of bodily resurrection, in
my ears at least, ring hollow.
But in this reflection I have underestimated what infinity means. In Haldanes picture, there will he universes,
indeed an infinite number of them, in which our brains will have full recollection of many previous rounds.
Satisfaction is at hand—tempered, though, by the thought of all those other universes which will also come into
existence (again, not once but an infinite number of times) with tragedies and horrors vastly outstripping
anything I’ve experienced this turn.
The Consolation of Haldane depends, though, on what kind of universe we live in, and maybe on such
arcana as whether there’s enough matter to eventually reverse the expansion of the universe, and the character of
vacuum fluctuations. Those with a deep longing for life after death might, it seems, devote themselves to
cosmology, quantum gravity, elementary particle physics, and transfinite arithmetic.
Clement of Alexandria, a Father of the early Church, in his Exhortations to the Greeks (written around the year 190)
dismissed pagan beliefs in words that might today seem a little ironic:
Far indeed are we from allowing grown men to listen to such tales. Even to our own children, when
they are crying their heart out, as the saying goes, we are not in the habit of telling fabulous stories
to soothe them.
In our time we have less severe standards. We tell children about Santa Claus, the Easter Bunny, and the
Tooth Fairy for reasons we think emotionally sound, but then disabuse them of these myths before theyre grown.
Why retract? Because their well-being as adults depends on them knowing the world as it really is. We worry, and
for good reason, about adults who still believe in Santa Claus.
On doctrinaire religions, “Men dare not avow, even to their own hearts,” wrote the philosopher David Hume,
the doubts which they entertain on such subjects. They make a merit of implicit faith; and disguise
to themselves their real infidelity, by the strongest asseverations and the most positive bigotry.
This infidelity has profound moral consequences, as the American revolutionary Tom Paine wrote in The Age
of Reason:
Infidelity does not consist in believing, or in disbelieving; it consists in professing to believe what
one does not believe. It is impossible to calculate the moral mischief, if I may so express it, that
mental lying has produced in society. When man has so far corrupted and prostituted the chastity of
his mind, as to subscribe his professional belief to things he does not believe, he has prepared
himself for the commission of every other crime.
T. H. Huxleys formulation was
The foundation of morality is to … give up pretending to believe that for which there is no evidence,
and repeating unintelligible propositions about things beyond the possibilities of knowledge.
Clement, Hume, Paine, and Huxley were all talking about religion. But much of what they wrote has more
general applications—for example to the pervasive background importunings of our commercial civilization:
There is a class of aspirin commercials in which actors pretending to be doctors reveal the competing product to
have only so much of the painkilling ingredient that doctors recommend most—they dont tell you what the
mysterious ingredient is. Whereas their product has a dramatically larger amount (1.2 to 2 times more per tablet).
So buy their product. But why not just take two of the competing tablets? Or consider the analgesic that works
better than the “regular-strength” product of the competition. Why not then take the “extra-strength” competi-
tive product? And of course they do not tell us of the more than a thousand deaths each year in the United States
from the use of aspirin, or the roughly 5,000 annual cases of kidney failure from the use of acetaminophen,
chiefly Tylenol. (This, however, may represent a case of corelation without causation.) Or who cares which break-
fast cereal has more vitamins when we can take a vitamin pill with breakfast? Likewise, why should it matter
whether an antacid contains calcium if the calcium is for nutrition and irrelevant for gastritis? Commercial
culture is full of similar misdirections and evasions at the expense of the consumer. Youre not supposed to ask.
Dont think. Buy.
Paid product endorsements, especially by real or purported experts, constitute a steady rainfall of deception.
They betray contempt for the intelligence of their customers. They introduce an insidious corruption of popular
attitudes about scientific objectivity. Today there are even commercials in which real scientists, some of
considerable distinction, shill for corporations. They teach that scientists too will lie for money. As Tom Paine
warned, inuring us to lies lays the groundwork for many other evils.
I have in front of me as I write the program of one of the annual Whole Life Expos, New Age expositions held
in San Francisco. Typically, tens of thousands of people attend. Highly questionable experts tout highly question-
able products. Here are some of the presentations: “How Trapped Blood Proteins Produce Pain and Suffering.
“Crystals, Are They Talismans or Stones?” (I have an opinion myself.) It continues: “As a crystal focuses sound
and light waves for radio and television”—this is a vapid misunderstanding of how radio and television work—
so may it amplify spiritual vibrations for the attuned human.” Or here’s one “Return of the Goddess, a Presen-
tational Ritual.” Another: “Synchronicity, the Recognition Experience.That one is given by “Brother Charles.
Or, on the next page, “You, Saint-Germain, and Healing Through the Violet Flame.” It goes on and on, with
plenty of ads about “opportunities”—running the short gamut from the dubious to the spurious—that are
available at the Whole Life Expo.
Distraught cancer victims make pilgrimages to the Philippines, where “psychic surgeons, having palmed bits
of chicken liver or goat heart, pretend to reach into the patient’s innards and withdraw the diseased tissue, which
is then triumphantly displayed. Leaders of Western democracies regularly consult astrologers and mystics before
making decisions of state. Under public pressure for results, police with an unsolved murder or a missing body on
their hands consult ESP “experts” (who never guess better than expected by common sense, but the police, the
ESPers say, keep calling). A clairvoyance gap with adversary nations is announced, and the Central Intelligence
Agency, under Congressional prodding, spends tax money to find out whether submarines in the ocean depths
can be located by thinking hard at them. A “psychic”—using pendulums over maps and dowsing rods in
airplanes—purports to find new mineral deposits; an Australian mining company pays him top dollar up front,
none of it returnable in the event of failure, and a share in the exploitation of ores in the event of success.
Nothing is discovered. Statues of Jesus or murals of Mary are spotted with moisture, and thousands of kind-
hearted people convince themselves that they have witnessed a miracle.
These are all cases of proved or presumptive baloney. A deception arises, sometimes innocently but collabora-
tively, sometimes with cynical premeditation. Usually the victim is caught up in a powerful emotion—wonder,
fear, greed, grief. Credulous acceptance of baloney can cost you money; thats what P. T. Barnum meant when he
said, “Theres a sucker born every minute.” But it can be much more dangerous than that, and when govern-
ments and societies lose the capacity for critical thinking, the results can be catastrophic—however sympathetic
we may be to those who have bought the baloney.
In science we may start with experimental results, data, observations, measurements, “facts.” We invent, if we
can, a rich array of possible explanations and systematically confront each explanation with the facts. In the
course of their training, scientists are equipped with a baloney detection kit. The kit is brought out as a matter of
course whenever new ideas are offered for consideration. If the new idea survives examination by the tools in our
kit, we grant it warm, although tentative, acceptance. If youre so inclined, if you dont want to buy baloney even
when it’s reassuring to do so, there are precautions that can be taken; there’s a tried-and-true, consumer-tested
What’s in the kit? Tools for skeptical thinking.
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 follows from the premise
or 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 theres 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 dont, others will.
* This is a problem that affects jury trials. Retrospective studies show that some jurors make up their minds very early—
perhaps during opening arguments—and then retain the evidence that seems to support their initial impressions and reject
the contrary evidence. The method of alternative working hypotheses is not running in their heads.
· Quantify. If whatever it is youre 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 truths to be sought in the many qualitative issues we are
obliged to confront, but finding them is more challenging.
· If theres a chain of argument, every link in the chain must work (including the premise)—not just most of
· Occams 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.
The reliance on carefully designed and controlled experiments is key, as I tried to stress earlier. We will not
learn much from mere contemplation. It is tempting to rest content with the first candidate explanation we can
think of. One is much better than none. But what happens if we can invent several? How do we decide among
them? We dont. We let experiment do it. Francis Bacon provided the classic reason:
Argumentation cannot suffice for the discovery of new work, since the subtlety of Nature is greater
many times than the subtlety of argument.
Control experiments are essential. If, for example, a new medicine is alleged to cure a disease 20 percent of the
time, we must make sure that a control population, taking a dummy sugar pill which as far as the subjects know
might be the new drug, does not also experience spontaneous remission of the disease 20 percent of the time.
Variables must be separated. Suppose youre seasick, and given both an acupressure bracelet and 50 milligrams
of meclizine. You find the unpleasantness vanishes. What did it—the bracelet or the pill? You can tell only if you
take the one without the other, next time youre seasick. Now imagine that youre not so dedicated to science as to
be willing to be seasick. Then you wont separate the variables. You’ll take both remedies again. Youve achieved
the desired practical result; further knowledge, you might say, is not worth the discomfort of attaining it.
Often the experiment must be done “double-blind,” so that those hoping for a certain finding are not in the
potentially compromising position of evaluating the results. In testing a new medicine, for example, you might
want the physicians who determine which patients’ symptoms are relieved not to know which patients have been
given the new drug. The knowledge might influence their decision, even if only unconsciously. Instead the list of
those who experienced remission of symptoms can be compared with the list of those who got the new drug, each
independently ascertained. Then you can determine what correlation exists. Or in conducting a police lineup or
photo identification, the officer in charge should not know who the prime suspect is, so as not consciously or
unconsciously to influence the witness.
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);
more cynical formulation by the Roman historian Polybius: Since the masses of the people are inconstant, full of unrul
desires, passionate, and reckless of consequences, they must be filled with fears to keep them in order. The ancients did well,
therefore, to invent gods, and the belief in punishment after death.
· 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 ambi-
guity 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 favorable 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 doesnt follow” (e.g., Our nation will prevail because God is great. But nearly
every nation pretends this to be true; the German 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);
* My favorite example is this story, told about the Italian physicist Enrico Fermi, newly arrived on American shores, enlisted
in the Manhattan nuclear weapons Project, and brought face-to-face in the midst of World War II with U.S. flag officers.
So-and-so is a great general, he was told. What is the definition of a great general? Fermi characteristically
asked. I guess its a general whos won many consecutive battles. How many? After some back and forth, they
settled on five. What fraction of American generals are great? After some more back and forth, they settled on
a few percent.
But imagine, Fermi rejoined, that there is no such thing as a great general, that all armies are equally matched, and tha
inning a battle is purely a matter of chance. Then the chance of winning one battle is one out of two, or 1/2, two battles
l/4, three l/8, four l/16, and five consecutive battles 1/32—which is about 3 percent. You would expect a few percent o
merican generals to win five consecutive battles—purely by chance. Now, has any of them won ten consecutive battles ?
· excluded middle, or false dichotomy—considering only the two extremes in a continuum of intermediate
possibilities (e.g., “Sure, take his side; my husband’s perfect; Im 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 excluded 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 weeks 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 mancaricaturing a position to make it easier to attack (e.g., Scientists suppose that living things
simply fell together by chance—a formulation that willfully ignores the central Darwinian insight that
Nature ratchets up by saving what works and discarding what doesnt. 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 Reagan 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 by 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 pur-
poses. Talleyrand said, “An important art of politicians is to find new names for institutions which under
old names have become odious to the public”).
Knowing the existence of such logical and rhetorical fallacies rounds out our toolkit. Like all tools, the
baloney detection kit can be misused, applied out of context, or even employed as a rote alternative to thinking.
But applied judiciously, it can make all the difference in the world—not least in evaluating our own arguments
before we present them to others.
The American tobacco industry grosses some $50 billion per year. There is a statistical correlation between
smoking and cancer, the tobacco industry admits, but not, they say, a causal relation. A logical fallacy, they imply,
is being committed. What might this mean? Maybe people with hereditary propensities for cancer also have
hereditary propensities to take addictive drugs - so cancer and smoking might be correlated, but the cancer would
not be caused by the smoking. Increasingly farfetched connections of this sort can be contrived. This is exactly
one of the reasons science insists on control experiments.
* Children who watch violent TV programs tend to be more violent when they grow up. But did the TV cause the violence,
or do violent children preferentially enjoy watching violent programs? Very likely both are true. Commercial defenders of T
violence argue that anyone can distinguish between television and reality. But Saturday morning childrens programs no
average 25 acts of violence per hour. At the very least this desensitizes young children to aggression and random cruelty. And
if impressionable adults can have false memories implanted in their brains, what are we implanting in our children when we
expose them to some 100,000 acts of violence before they graduate from elementary school?
Suppose you paint the backs of large numbers of mice with cigarette tar, and also follow the health of large
numbers of nearly identical mice that have not been painted. If the former get cancer and the latter do not, you
can be pretty sure that the correlation is causal. Inhale tobacco smoke, and the chance of getting cancer goes up;
dont inhale, and the rate stays at the background level. Likewise for emphysema, bronchitis, and cardiovascular
When the first work was published in the scientific literature in 1953 showing that the substances in cigarette
smoke when painted on the backs of rodents produce malignancies, the response of the six major tobacco
companies was to initiate a public relations campaign to impugn the research, sponsored by the Sloan Kettering
Foundation. This is similar to what the Du Pont Corporation did when the first research was published in 1974
showing that their Freon product attacks the protective ozone layer. There are many other examples.
You might think that before they denounce unwelcome research findings, major corporations would devote
their considerable resources to checking out the safety of the products they propose to manufacture. And if they
missed something, if independent scientists suggest a hazard, why would the companies protests? Would they
rather kill people than lose profits? If, in an uncertain world, an error must be made, shouldnt it be biasing
toward protecting customers and the public?
A 1971 internal report of the Brown and Williamson tobacco Corporation lists as a corporate objective “to set
aside in the minds of millions the false conviction that cigarette smoking causes lung cancer and other diseases; a
conviction based on fanatical assumptions, fallacious rumors, unsupported claims and the unscientific statements
and conjectures of publicity-seeking opportunists.They complain of
the incredible, unprecedented and nefarious attack against the cigarette, constituting the greatest
libel and slander ever perpetrated against any product in the history of free enterprise; a criminal
libel of such major proportions and implications that one wonders how such a crusade of calumny
can be reconciled under the Constitution can be so flouted and violated [sic].
This rhetoric is only slightly more inflamed than what the tobacco industry has from time to time uttered for
public consumption.
There are many brands of cigarettes that advertise low “tar” (ten milligrams or less per cigarette). Why is this a
virtue? Because it is the refractory tars in which the polycyclic aromatic hydrocarbons and some other carcinogens
are concentrated. Arent the low-tar ads a tacit admission by the tobacco companies that cigarettes indeed cause
Healthy Buildings International is a for-profit organization, recipient of millions of dollars over the years from
the tobacco industry. It performs research on second-hand smoke, and testifies for the tobacco companies. In
1994, three of its technicians complained that senior executives had faked data on inhalable cigarette particles in
the air. In every case, the invented or “corrected” data made tobacco smoke seem safer than the technicians
measurements had indicated. Do corporate research departments or outside research contractors ever find a
product to be more dangerous than the tobacco corporation has publicly declared? If they do, is their employ-
ment continued?
Tobacco is addictive; by many criteria more so than heroin and cocaine. There was a reason people would, as
the 1940s ad put it, “walk a mile for a Camel.” More people have died of tobacco than in all of World War II.
According to the World Health Organization, smoking kills three million people every year worldwide. This will
rise to ten million annual deaths by 2020—in part because of a massive advertising campaign to portray smoking
as advanced and fashionable to young women in the developing world. Part of the success of the tobacco industry
in purveying this brew of addictive poisons can be attributed to widespread unfamiliarity with baloney detection,
critical thinking, and the scientific method. Gullibility kills.
I am curious how many people died of smoking worldwide in 2018. "This will rise to ten million annual deaths by 2020--" What disproves that racial issues in US are not a byproduct or have a correlation with its capitalist approach? Also "capitalism" means similar, but different things in different countries. What disproves that racial issues in US are not a byproduct or have a correlation with its capitalist approach? Also "capitalism" means similar, but different things in different countries. This is, however, after smoking became less fashionable (see for example world in []( I would say that the original estimate was really accurate. Can't history the history of the USA be a much bigger factor than capitalism itself? Because life expectancy was lower in communist countries in general while IMR was not lower in capitalist countries in general as far as I know. We would like to hear about this from Fermat too... Randomized control trials (RCTs) provide one of the most common means to probe causality. The science of cause and effect is still being developed, would recommend the Book of Why by Judea Pearl for more on the topic. A similar argument can be made for "statistical significance" at a given pvalue, where 5% of the time, a test will be expected to be statistically significant using a .05 pvalue threshold by random chance. If Carl were alive for the misinformation campaigns spread by opioid manufacturers, he would not be surprised by the resulting opioid epidemic that we are experiencing now, where over 70,200 Americans died from drug overdoses in 2017. The sugar pill can control for the placebo effect. WHO website 26/07/2019 Under key facts: "Tobacco kills more than 8 million people each year. More than 7 million of those deaths are the result of direct tobacco use while around 1.2 million are the result of non-smokers being exposed to second-hand smoke." Was this essay first published in 1996 in Carl Sagan's book "The demon-haunted world"? Trying to figure out the date in which this was first published. The infant mortality rate is a bad example because the other industrialized countries are also capitalist. Besides, we know that 40% of the deviation from the European average is due to different reporting standards. After adjusting for these standards, one finds that the US's higher real IMR is mostly due to the higher preterm birth rate in the US, which mostly comes from a failure to adequately treat minority communities. College-educated whites in the US have the same IMR as the healthiest European countries, at 2.6 deaths per 1000. Therefore, its safe to say the US's racial issues are by far the biggest factor contributing to its high real IMR. - See [Chen A, Oster E, Williams H. Why Is Infant Mortality Higher in the United States Than in Europe?. Am Econ J Econ Policy. 2016;8(2):89–124. doi:10.1257/pol.20140224]( - A readable [summary]( of the paper from the NBER. I wonder what Carl would think of Instagram influencers... Among the things that Knight claims about Ramtha, are that he speaks of leading an army over 2.5 million (over twice the population at 30,000 BC), and he conquered three fourths of the known world… More about J. Z. Knight and Ramtha: I would love to see a citation for this claim: "More than a third of American adults believe that on some level they’ve made contact with the dead. The number seems to have jumped by 15 percent between and 1988." Sagan was born and largely grew up in Brooklyn; his father, Samuel Sagan, was an immigrant garment worker from Kamianets-Podilskyi (today's Ukraine) and his mother, Rachel Molly Gruber, was a housewife from New York. Speaking of his parents and their influence on his scientific pursuits, Sagan said: My parents were not scientists. They knew almost nothing about science. But in introducing me simultaneously to skepticism and to wonder, they taught me the two uneasily cohabiting modes of thought that are central to the scientific method. Carl Sagan has a place in history as one of the greatest communicators of scientific ideas, regularly drawing tens of millions of viewers for his show Cosmos. He was also an astronomer, astrophysicist, astrobiologist, and cosmologist, among many other things. If you've never heard of him, or watched his programming, read about him here and check out some of his videos. Cosmos episode: More about Carl: