(by Leland R. Beaumont)
Inquiry,
evidence, and argument are the powerful tools we use to accurately determine what
is. They provide foundation, stability, and balance to our human spirit's
ambitions, aspirations, optimism, hopes,
imagination, and distortions. They are the tools we use to test
assumptions and understand cause-and-effect relationships in the world around
us. The goal is accuracy in facts, analysis, reason, and conclusions.
Facts
are stubborn and the pen is mightier than the sword. Embrace facts as your
friends while maintaining a healthy skepticism. Be prepared to reevaluate your
opinions, interpretations, beliefs,
assumptions, and conclusions as new information, evidence, or analysis
becomes available or is better understood. Develop, refine, and apply your
own theory of knowledge to make your own best
decisions. Stay curious.
Definitions
Inquiry:
- Curiosity,
questioning, and learning.
- Expressing
doubt.
Evidence:
- Observed
phenomenon
Argument:
- Logically
valid conclusions drawn from the evidence presented.
- A
course of reasoning aimed at demonstrating truth or falsehood.
- A
set of statements in which one follows logically as a conclusion from
the others.
Valid logic
and the scientific method help us understand what is,
while fallacies
and any mistake in reasoning
distort our perception and obscure our
thinking. Our minds are wired to select, interpret, and even distort, evidence supporting the hypothesis
“I'm OK”. Every day we are subjected to manipulations, the influence of
self-interested parties, factual and logical errors, opinion presented as
fact, hype, and a variety of distortions.
Writing
and other communications can be evaluated using the criteria of: evidence
provided, factual accuracy, credibility of references, logical validity,
depth of analysis, innovation and insight, relevance and significance,
balanced point of view, narrative skill, clarity, and presentation.
Good writing is clear thinking made visible. Learn to evaluate what you see,
read, and hear; think critically, ask questions and draw your own
conclusions.
It is
authentic and informative to describe the level of uncertainty when
communicating information. Have the courage and authenticity to say: “I don't know”, or: “This
is a rough estimate” or simply “This is what I believe”. We face measurement
uncertainty, estimation error, sampling error, limited evidence, ambiguous
evidence, anecdotal evidence, conflicting evidence, non-representative
evidence, disputed evidence, misinformation, disinformation, inference,
extrapolation, tradition, alternative points of view, the not-yet known,
biased information, parochial points of view, taboos, and the unknowable when
seeking answers to so many questions. Distinguish between undisputed fact,
widely accepted fact, theory, expert opinion, hypothesis, minority opinion,
filtered information, assumptions, disingenuous statements, biased
information, dogma, faith, propaganda, and speculation when
reporting information, engaging in dialogue, or making arguments. Separate anecdotes from systematic studies. Consider how
well the evidence represents an larger conclusion. When drawing conclusions
from a set of premises, comment on the level of certainty of each premise and
the soundness of the logic leading to each conclusion. It is a fact that
2+2=4 and that one weather report forecasts a 60% chance of rain for
tomorrow. Use error bars and
significant figures to convey the range of uncertainly. Carefully distinguish
what you do know from what you do not know. Separate observation from
interpretation. Scientific reports properly include error bars, forecasts and
estimates include confidence intervals and ranges, and opinions reflect only
a personal point of view that may not be widely shared or well considered.
Critical Thinking
Critical thinking —thinking
directed toward solving problems—involves seeking evidence, closely examining
reasoning and assumptions, analyzing basic concepts, and tracing out
implications of what is said and what is done. Knowing the rules of logic and
being alert to their fallacies is the first step in
critical thinking. Critical thinkers consider a variety of questions when
evaluating information and drawing conclusions. For example:
- What
problem are we working to solve?
- What
are my goals, objectives, and motives?
- What
are the presenter's goals, objectives, biases, beliefs, and motives?
- What
question will best advance the dialogue?
- How
can a question be best worded and presented?
- What
are the sources of information and fact? Are the samples and examples
representative?
- What
methods were used and what is the quality of information collection?
- What
are the possible sources of error?
- What
is the range of uncertainty and is it accurately described and
represented?
- What
modes of judgment and reasoning are used?
- What
concepts make the reasoning possible?
- What
assumptions underlie the concepts in use? What alternative
interpretations and explanations fit the facts? Are these assumptions
valid?
- What
implications follow from the concepts and assumptions used?
- What
is the point of view or frame of reference for this reasoning? Is the
point of view one-sided or balanced
?
These
considerations suggest specific questions such as:
- What
is the most fundamental issue here?
- From
what point of view can this problem best be approached?
- What
assumptions are being made here? Do these assumptions make sense? Why?
What alternatives are sensible?
- What
conclusion can best be inferred from the data? What alternative
conclusions does it also support?
- What
is the fundamental concept being presented?
- Is
conclusion “B” consistent with assumption, data, premise, or conclusion
“A”?
- How
could I check the accuracy of these data? What alternative sources
exist? Is this data reproducible? Is the data systematic and
representative?
- If
we accept conclusion “A”, what else is implied?
- Is
this a credible source of information? Why?
Critical
thinking is not negative thinking. It is careful thinking directed toward
deep understanding and insight. It recognizes that the obvious is not
always true, and many things that are true are not at all obvious.
Evaluating Evidence
Evidence
is often ambiguous or conflicting and always has to be evaluated, analyzed,
and interpreted. Evidence is most reliable when:
- you
can directly observe, examine, and probe the evidence yourself, in
detail, at length, without interference or restriction, without
obstruction, and from a variety of vantage points.
- you
are alert and unimpaired by alcohol, drugs, distraction,
expectations, persuasion, vested interests, bias
,
sleep deprivation, delusion, stress, peer pressure, coercion, or strong
emotions.
- you
can verify the source, origin, authenticity, context, and representative
nature of the evidence.
- multiple
senses cross check and provide consistent information regarding the
observation. Evidence is more complete and convincing when the way
something feels is consistent with the way it looks. For example, after
seeing a rock, you might pick it up to examine more closely. If the
texture feels like a rock and the weight is what you expect, then you
have additional evidence that what you are observing is a rock. However
if the surface texture is unusual, or the weight is unexpected, then
perhaps you are examining an artificial stone, or a hollow stone, or
something quite different made of unexpected materials.
- the
evidence is public and accessible, so that several people can examine
it, share their findings, and discuss the similarities and differences,
consistencies and inconsistencies in their observations.
- the
evidence can be observed repeatedly, so observations can be checked,
rechecked, and reexamined.
- the
evidence can be observed under known or standard conditions that assist
its evaluation. As an example, water has very different appearance and
properties below freezing and above its boiling point.
- Careful
records such as notes, photographs, audio and video recordings, and
diagrams are more reliable and should be used instead of unaided recall
when information is required later, after the evidence has been examined
first hand.
- observation
is separated from interpretation. We observe the sunlight appearing in
the morning, traversing a path across the sky, and disappearing in the evening.
One interpretation is that the earth is the center of the universe and
the sun travels across the sky. An alternative interpretation is that
the earth rotates on its axis as it revolves around the sun.
- the
data is a good representation of the issue being investigated.
Systematic information is more reliable than anecdotal information. Data obtained from
an independent source is more reliable than data obtained, provided,
selected, or interpreted by someone with an interest in the outcome.
- whenever
statistics are used to summarize data and
draw conclusions, ensure the statistics are correctly used.
Also,
take care to separate observation from interpretation to avoid
drawing unfounded conclusions. Is that clear liquid water or vinegar? Is that
attractive woman he is with his wife, daughter, co-worker, assistant, boss,
or mistress? Have the people stopped asking questions because everything is
OK or because inquiry is being punished or otherwise surpressed? Does
the sun move across the sky, or does the earth move past the sun? What are
alternative explanations for what we are seeing? Consider this amusing story where interpretation gets well
ahead of observation.
Rather
than examining evidence first hand, we often rely on secondary information
sources. These include gossip, rumor, hearsay, conversation, the Internet,
and information provided by various luminaries and authorities available as
publications, speeches, presentations, advertisements, endorsements, radio
and TV programs, and news items.
The
English language use of the word “authority” has two very different meanings.
One meaning describes positional power—such
as the right to control, command, or determine—and the other describes
expertise—an accepted source of information. Evidence obtained from an
authority has to be carefully evaluated based on the expertise of the
authority, while respectfully disregarding the power, influence,
fame, charisma, attachment, or appeal of the authority. Trust and verify.
Exercise critical thinking. A common and seductive fallacy is an appeal to authority .
We are often mislead because of a natural tendency to trust
some people and distrust others.
An
authority often presents only a single point-of-view, and too often this
point-of-view advances a vested interest. One example of this is an Internet
site claiming to provide expert information on sleep problems as a public
service. However, the web site is created, paid for, and edited entirely by
the manufacturer of a particular prescription drug sleep aid. This is a
manipulative marketing tool, disguised as a source of objective information.
It uses factual statements to present a false message. Examine a variety of view points
and apply critical thinking to help evaluate information provided by an
authority, or even by an aligned group of authorities.
Take
particular care to evaluate the reliability of claims of divine or religious
experience, pronouncements by authorities, appeals to common sense, the
obvious, and other situations where information or conclusions are claimed to
be self-evident, beyond question, or beyond our comprehension. When a person
in power responds with a preemptive dismissal—refusing to seriously consider
an inquiry, or replying without responding by using power,
humiliation, ridicule, insult, intimidation,
distraction, obfuscation ,
condescension, or humor—it is often because the evidence is absent or
unsubstantiated. Arrogance, belligerence, shouting, sneering, and repetition do
not validate evidence, instead these distractions should raise suspicions.
Confident experts typically welcome critical examination and discussion of
their findings. Charlatans do not. Retain a healthy skepticism. Challenge
authority as needed to understand and evaluate their claims and assess
evidence. Challenge claims with a respectful and tactful request to “show me”
and “help me understand”.
Evidence
can lead to dramatic conflicts with power. Consider the disputes
astronomer Galileo Galilei had with the Pope over the evidence Galileo
gathered to demonstrate that the sun, not the earth, was the center of the
solar system. Galileo observed the moons of Jupiter, the phases of Venus,
movement of sunspots, and light and shadow on the moon through his telescope.
This evidence convinced him that the earth revolved around the sun.
In 1630
Galileo completed his book Dialogue Concerning the Two Chief
World Systems
in which the Earth-centered Ptolemaic model and the sun-centered Copernican models
are discussed and compared. After the book was printed in 1632 Pope Urban
VIII forbid its distribution; the case was referred to the Inquisition and
Galileo was summoned to Rome.
In 1633
Galileo was formally interrogated for 18 days and on April 30 Galileo
confessed (disingenuously no doubt) that he may have made the Copernican case
in the Dialogue too strong and he offered to refute it in his next book. The
Pope declined this offer and decided that Galileo should be imprisoned
indefinitely. Soon after, with a formal threat of torture, Galileo was
examined by the Inquisition and sentenced to prison and religious penances,
the sentence was signed by 6 of the 10 inquisitors. In a formal ceremony at
the church of Santa Maria Sofia Minerva, Galileo renounced his errors under
oath. He was then put in house arrest in Sienna. Galileo had the courage to
speak truth to power, and the wisdom to recant and save
his life.
Galileo
remained under house arrest, despite many medical problems and a
deteriorating state of health, until his death in 1642. Finally On October
31, 1992, the Roman Catholic Church admitted that it had erred in its
359-year-old persecution of Galileo.
And then
there was “Watergate”.
On the
night of June 17, 1972, five men were arrested for breaking into Democratic
National Convention offices, apparently to repair illegal wiretaps that had
been installed on a previous occasion. Republican leadership denied any
knowledge of the wiretap. However, Washington Post reporters Carl Bernstein
and Bob Woodward relentlessly pursued the story, skillfully interviewing many
frightened people, stitching together bits of evidence, gathering facts,
posing well formed questions, and finally breaking the story wide open. As a
result, on August 9, 1974, President Richard M. Nixon resigned the presidency
of the United States to avoid further investigation of his involvement and a
likely impeachment.
Both of
these examples rely on the fallacy of “appeal to authority ”
where the argument is based on the authority, power, and position of the
person making the claims, e.g. the pope and the president, rather than on
observable phenomenon. This presents the difficult choice of deciding based
on who you know or what you know.
Facts
are stubborn. When you have to choose between following the evidence and
following orders, do your homework and go with the evidence. Reject the claim
that “might makes right.” The facts are likely to prevail in the long term.
Have the courage to speak truth to power . The
entertaining Hans Christian Andersen story, The Emperor’s New Suit ,
reminds us to follow the evidence and retain a healthy skepticism.
Dismiss Irrelevant
Information
Much of
the information we are exposed to is irrelevant, distracting, distorting, and
not suitable evidence. These various non sequiturs—inferences or
conclusions that do not follow from the premises—were recognized and named by
the ancient Greeks, yet they continue to be prevalent today. Here is a
brief description of these seductive fallacies of irrelevance:
- Ad
ignorantiam—from ignorance—This is the fallacy of claiming
a statement is either true or false without having evidence or any valid
reason supporting the claim.
- Ad vericundium—appeal to authority—This is the
fallacy of appealing to the power, position, or fame of the person
making a claim rather than to their expertise. This is discussed at
length under the topics “Evaluating Authority” and “Evidence and power”
above.
- Post hoc ergo propter hoc—after
this, therefore because of this—This is the fallacy of concluding that
because one event follows another, the first caused the second.
Concluding that a rainstorm was caused by a rain dance is an example of
this fallacy. This fallacy sneaks in when ‘the sun rose after the
rooster crows’ becomes ‘the sun rose because the rooster crows’.
In fact, causality is a complex topic and is difficult to prove. John
Stewart Mills proposed his “canons of induction” also know as “Mills Methods
”
as a test for establishing that “A” causes “B”. This is an important
basis for the scientific method .
Be careful to use the word “because” only to describe a cause and effect
relationship that you know exists.
- Ad
populum—appeal to the people—This is the fallacy of accepting
something as fact simply because many other people also believe it to be
true.
- Ad
baculum—appeal to force—This is the fallacy
that “might makes right”; accepting as correct the point of view or
opinion of someone willing to use force to suppress inquiry, alternative
points-of-view, or contrary evidence. As an example, frustrated mothers
sometimes answer their misbehaving and defiant three-year-olds by saying
“because I'm the mother”. Tyrants provide many more consequential
examples throughout history.
- Ad
misericordiam—appeal to pity—This is the fallacy
of accepting a point-of-view or opinion of someone because they deserve
our pity. For example, someone might argue
they deserve a raise by saying they might lose their house if they don't
get more money.
- Ad hominem—argument against the man—In this
fallacy the character of an expert is attacked (or praised) as an
attempt to discredit (or establish) the information they provide. An
example is discrediting Bill Clinton's foreign policy because he had
improper sexual liaisons. Advancing a deliberate ad hominem fallacy
crosses the line from argument to attack and can easily
become a precursor to hate. It is dangerous because it promotes
the false belief that destroying the person can eliminate the unwanted
or inconvenient information or idea.
- Accident and Converse Accident—drawing hasty
conclusions—are fallacies inferring that each member of a group share
the characteristics of the group, or that the group is characterized by
the attributes of one particular member. These are the fallacies of
stereotyping and non-representative samples. The logical fallacy of
accident, also called destroying the exception or a dicto simpliciter ad dictum
secundum quid
,
is a fallacy occurring when an exception to the generalization is
ignored. Applying a stereotype that does not accurately
describe an individual is an example of this type of fallacy. The
logical fallacy of converse accident (also called reverse accident,
destroying the exception or a dicto secundum quid ad dictum simpliciter )
is a fallacy that can occur when an exception to a generalization is
wrongly called for.
It is
surprising that these fallacies are so common, even though they have been
well known for thousands of years. When someone persists in obscuring
evidence with these fallacies, they are being careless, ignorant, biased, manipulative, or malicious.
Don't be persuaded.
Know the
rules of logic and be alert for their fallacies. Even if evidence is accurate
and relevant, it can be easily used in a variety of invalid arguments to draw
wrong conclusions from improper inferences. Resolve ambiguity and challenge
equivocation. Recognize and avoid these fallacies of ambiguity:
- Petitio principii—a request for the premise—also
known as circular reasoning or begging the question
.
It is a fallacy for a premise to rely in any way on the conclusion. For
example, explaining that “Joe is not here because he does not go to
parties” provides no information. It is equivalent to saying “Joe is not
at this party because Joe does not go to parties.” More subtle examples
are common and often go unrecognized or unchallenged.
- Complex Question
—basing
a question on an unproven assumption—It is deceitful to pose an
unsubstantiated statement or opinion in the form of a question, yet it
is often done. Parents are being manipulative when they ask their child
“Would you like to be a good boy and go to bed now?” The coupling of
“being a good boy” with the request to “go to bed now” establishes an
unproven contingency because a bad boy might choose to go to bed now or
a good boy might choose to stay up longer.
- Equivocation—Exploiting
ambiguous language—Many words have several, often disparate meanings.
Confusing these meanings is the fallacy of equivocation
.
Consider this joke as an example: Mom to teenage daughter leaving on a
date: “Now be good dear.” Boyfriend remarking to his girlfriend after a
steamy date: “Wow, you really were good!”
- Amphiboly
—two
in a lump—This fallacy exploits an ambiguous grammatical construct. A
sign stating “No Smoking Permitted” can be interpreted to mean that it
is permissible to not smoke, but it is also permissible to smoke, since
smoking is not specifically prohibited by the ambiguous language.
- Accent
—ambiguity
based on emphasis—Aristotle originally used this to describe differences
in meaning resulting from differences in the pronunciation of words. For
example, the phrase “I resent that letter” can be read to mean the
letter was sent again, or the letter was seen as offensive, depending on
the accent of the second word. More recently this fallacy is used to describe
quotations taken out of context, a headline that screams about some
minor detail, or the “catch” hidden in the fine print and ignored by the
sales pitch.
- Category
Mistake—Not recognizing the composite from the collected elements—For
example, complaining that you can't find any forest here, all you see is
a bunch of trees.
- Composition
Error—incorrectly projecting attributes of a part onto the whole—For
example, since Joe is a good player, and he plays for team X, then team
X must be a good team.
- Division
Error—incorrectly projecting attributes of the whole onto each component
part—For example, to say “XYZ is a good corporation, so I am sure that
Mr. X who works there must be a fine fellow” is invalid. Also, to say
that “Suzie lives in a big house, so I'm sure she has a big bedroom” is
also invalid. Another form of this error is illustrated by this example:
Dogs often run stray, the Chinese Shar-pei is a breed of dog, so I'm
sure they often run stray.
- False
dilemma—exploiting ambiguous complements—Declaring that “you are either
with us or against us” presents a false dilemma because “against us” is
not an accurate set complement (i.e. encompasses everything else) of
“with us”. The dilemma is false because it ignores the middle ground. In
this example it is possible to primarily agree on some issues, primarily
disagree on others, have partial agreement or disagreement on issues,
and to have no established position on still others.
Awake and Aware:
Our
perceptions are more accurate when we are alert, aware, and conscious of our
environment. A good night's sleep, attention focused on the present task, and
a clear head help us to see the world as it is. Fatigue, alcohol, drugs,
stress, strong emotions, chaos, multitasking, and distractions all impair our
senses and judgments. Trust evidence that was gathered with a clear head.
Quotations:
- “You're
entitled to your own opinions, but you're not entitled to your own
facts.” ~ Senator Daniel Patrick Moynihan
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- “Facts
are stubborn.”
- “It
ain't what you don't know that gets you into trouble. It's what you know
for sure that just ain't so.” ~ Mark Twain
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- “The
source of all problems today comes from the gap between how we think and
how nature works” ~ Gregory Bateson
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- “The
quality of our thinking is given in the quality of our questions ~ Linda
Elder, Foundation for Critical Thinking
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- “Trust
and verify.” ~ Ronald Reagan
.
- “Eschew obfuscation.”
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- “The
further you get from power the closer you get to the truth” ~ Bill Moyers
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- “It
is not obvious what is obvious.”
- “A
lie unchallenged becomes the truth.” ~
- “Truth
is strong enough by itself to convince, and should never be imposed by
force.” ~ Matthieu Richard
- “Our
questions cleanse our answers.” ~ Krista Tippett
- “Seek
truth from facts.” ~
- “When
all else fails, men turn to reason.“ ~ Abba Eban
- “To
argue with a person who has renounced the use of reason is like
administering medicine to the dead.” ~ Thomas Pain
- “Reality
is always your friend.”
- “Character
is tested whenever power clashes with evidence.” ~ Leland R. Beaumont
- “For
a successful technology, reality must take precedence over public
relations, for Nature cannot be fooled.” ~ Richard P. Feynman
-
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