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Logic Test 2 Examples
Choose the correct fallacy following the example.
97
Philosophy
Pre-School
03/29/2011

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Term
All bullfights are grotesque rituals.
Al executions are grotesque rituals.
Therefore, all bullfights are executions.
Definition
Formal Fallacy
Term
If apes are intelligent, then apes can solve puzzles.
Definition
Formal Fallacy
Term
The Brooklyn Bridge is made of atoms.
Atoms are invisible.
Therefore, the Brooklyn Bridge is invisible.
Definition
Informal Fallacy
Term
A chess player is a person.
Therefore, a bad chess player is a bad person.
Definition
Informal Fallacy
Term
Child to playmate: Sesame Street is the best show on TV; and if you don't believe it, I'm going to call my big brother over here and he's going to beat you up.
Definition
Ad Bacculum
Term
Secretary to Boss: I deserve a raise in salary for the coming year. After all, you know how friendly I am with your wife, and I'm sure you wouldn't want her to find out what's been going on between you and that sexpot client of yours.
Definition
Ad Bacculum
Term
Taypayer to Judge: Your Honor, I admit that I declared thirteen children as dependents on my tax return, even though I have only two. But if you find me guilty of tax evasion, my reputation will be ruined. I'll probably lose my job, my poor wife will notbe able to have the operation that she desperately nedds, and my kids will starve. Surely I am not guilty.
Definition
Appeal to Pity
Term
Of course you want to buy Zing toothpaste. Why, 90 percent of America brushes with Zing.
Definition
Ad Populum Bandwagon Argument
Term
The Few, the Proud, the Marines.
Definition
Ad Populum Appeal to Vanity
Term
A Rolls-Royce is not for everyone. If you qualify as one o the select few, this distinguished classic may be seen and driven at British Motor Cars, Ltd. (By Appointment Only Please.)
Definition
Ad Populum Appeal to Snobbery
Term
Before he died, poet Allen Ginsberg argued in favor of legalizing pornography. But Ginsberg's arguments are nothing but trash. Ginsberg was a marijuana-smoking homosexual and a throughgoing advocate of the drug culture.
Definition
Ad Hominem Abusive
Term
William Buckley has argued in favor legalizing drugs such as cocaine and heroin. But Buckley is just another one of those upper-crust intellectuals who is out of touch with real America.No sensible person should listen to his pseudosolutions.
Definition
Ad Hominem Abusive
Term
The Dalai Lama argues that China has business in Tibet and the West should do something about it. But the Dalai Lama just wants the Chinese to leave so he can return as leader. Naturally he argues this way. Therefore, we should reject his arguments.
Definition
Ad Hominem Circumstantial
Term
Child to Parent: Your argument that I should stop stealing candy from the corner store is no good. You told me yourself just a week ago that you, too, stole candy when you were a kid.
Definition
Ad Hominem Tu Quoque
Term
International terrorist Osama bin Laden planned the destruction of the World Trade Center, killing thousands of innocent people, and he supports terrorist causes all over the world. Bin Laden is therefore a wicked and irresponsible person.
Definition
No Fallacy
Term
Shakespeare cannot possibly have written the thirty-six plays attributed to him because the real Shakespeare was a two-bit country businessman who barely finished the fourth grade in school and who never the left the confines of his native England.
Definition
No Fallacy
Term
Mickey has testified that he saw Freddy set fire to the building. But Mickey was recently convicted on ten counts of perjury, and he hates Freddy with a passion and would love to see him sent to jail. Therefore, you should not believe Mickey's testimony.
Definition
No Fallacy
Term
Freedom of speech is a constitutionally guaranteed right. Therefore, John Q Radical should not be arrested for his speech that incited the riot last week.
Definition
Accident
Term
Property should be returned to its rightful owner. That drunken sailor who is starting a fight with his opponents at the pol table lent you his .45-caliber pistol, and now he wants it back. Therefore, you should return it to him now.
Definition
Accident
Term
Mr. Goldberg has argued against prayer in he public schools. Obviously Mr. Goldberg advocates atheism. But atheism is what they used to have in Russia. Atheism leads to the suppression of all religions and the replacement of God by an omnipotent state. Is that what we want for this county? I hardly think so. Clearly Mr. Goldberg's argument is nonsense.
Definition
Straw Man
Term
The garment workers have signed a petition arguing for better ventilation on the work premises. Unfortunately, air-conditioning is expensive. Air ducts would have to be run throughout the factory,and a massive heat exchange unit installed on the roof. Also, the cost of operating such a system during the summer would be astronomical. In view on these considerations the petition must be rejected.
Definition
Straw Man
Term
The student status committee has presented us with an argument favoring alcohol privileges on campus. What do the students want? Is it their intention to stay boozed up from the day they enter as freshmen until the day they graduate? Do they expect us to open a bar for them? Or maybe a chain of bars all over campus? Such a proposal is ridiculous.
Definition
Straw Man
Term
Crimes of theft and robbery have been increasing at an alarming rate lately. The conclusion is obvious: We must reinstate the death penalty immediately.
Definition
Missing the Point
Term
Abuse of the welfare system is rampant nowadays. Our only alternative is to abolish the system altogether.
Definition
Missing the Point
Term
Environmentalists are continually harping about the dangers of nuclear power. Unfortunately, electricity is dangerous no matter where it comes from. Every year hundreds of people are electrocuted by accident. Since most of these accidents are caused by carelessness, they could be avoided if people would just exercise greater caution.
Definition
Red Herring
Term
There is a good deal of talk these days about the need to eliminate pesticides from our fruits and vegetables. But many of these foods are essential to our health. Carrots are an excellent source of vitamin A, broccoli is rich in iron, and oranges and grapefruit have lots of vitamin C.
Definition
Red Herring
Term
Professor Conway complains of inadequate parking our campus. But did you know that last year Conway carried on a torrid love affair with a member of the English Department? The two used to meet every day for clandestine sex in the copier room. Apparently they didn't realize how much you can see through that fogged glass window. Even the students got an eyeful. Enough said about Conway.
Definition
Red Herring
Term
Dr. Bradshaw, our family physician, has stated that the creation of muonic atoms of deuterium and tritium hold the key to producing a sustained nuclear fusion reaction at room temperature. In view of Dr. Bradshaw's expertise as a physician, we must conclude that this is indeed true.
Definition
Appeal to Unqualified Authority
Term
David Duke, former Grand Wizard of the Ku Klux Klan, has stated, "Jews are not good Americans. They have no understanding of what America is." On the basis of Duke's authority, we must therefore conclude that the Jews in this country are un-American.
Definition
Appeal to Unqualified Authority
Term
James W. Johnston, Chairman of R.J. Reynolds Tobacco Company, testified before Congress that tobacco is not an addictive substance and that smoking cigarettes does not produce any addiction. Therefore, we should believe him and conclude that smoking does not in fact lead t any addiction.
Definition
Appeal to Unqualified Authority
Term
Old Mrs. Furguson (who is practically blind) has testified that she saw the defendant stab the victim with a bayonet while she was standing in the twilight shadows 100 yards from the incident. Therefore, members of the jury, you must find the defendant guilty.
Definition
Appeal to Unqualified Authority
Term
The county tax collector issued a press release stating that property tax revenues are higher this year than last. Therefore, we conclude that these revenues are indeed higher this year.
Definition
No Fallacy
Term
People have been trying for centuries to provide conclusion evidence for the claims of astrology, and no one has ever succeeded. Therefore, we must conclude that astrology is a lot of nonsense.
Definition
Appeal to Ignorance
Term
People have been trying for centuries to disprove the claims of astrology, and no one has ever succeeded. Therefore, we must conclude that the claims of astrology are true.
Definition
Appeal to Ignorance
Term
Teams of scientists attempted over several decades to detect the existence of the luminiferous aether, and all failed to do so. Therefore luminiferous aether does not exist.
Definition
Appeal to Ignorance
Term
No one as ever seen Mr. Andrews drink a glass of wine, beer, or any other alcoholic beverage. Probably Mr. Andrews is a nondrinker.
Definition
No Fallacy
Term
Members of the Jury, you have heard the prosecution present its case against the defendant. Nothing, however, has been proved beyond a reasonable doubt. Therefore, under the law, the defendant is not guilty.
Definition
No Fallacy
Term
After only one year the alternator went out in Mr. O'Grady's new Chevrolet. Mrs. Dodson's Oldsmobile developed a transmission problem after six months. The obvious conclusion is that cars made by General Motors are just a pile of junk these days.
Definition
Hasty Generalization
Term
Ten Arab fundamentalists hijacked planes and crashed them into the World Trade Center in New York City. The message is clear. Arabs are nothing but a pack of religious fanatics prone to violence.
Definition
Hasty Generalization
Term
Ten milligrams of substance Z was fed to four mice, and within two minutes all four went into shock and died. Probably substance Z, in this amount is fatal to mice in general.
Definition
No Fallacy
Term
One hundred thousand voters from Orange County, California, were (not randomly) surveyed on their choice for governor, and 68 percent said they intend to vote for the Republican candidate. Clearly the Republican candidate will be elected.
Definition
Hasty Generalization
Term
During the past two months, every time that the cheerleaders have worn blue ribbons in their hair, the basketball team has been defeated. Therefore, to prevent defeats in the future, the cheerleaders should get rid of those blue ribbons.
Definition
False Cause - Post Hoc Ergo Propter Hoc
Term
Successful business executives are paid salaries in excess of $100,000. Therefore, the best way to ensure that Ferguson will become a successful executive is to raise his salary to at least $100,000.
Definition
False Cause - Non Causa Pro Causa
Term
There are more laws on the books today than ever before, and more crimes are being committed than ever before. Therefore, to reduce crimes we must eliminate the laws.
Definition
False Cause - Non Causa Pro Causa
Term
The quality of education our grade schools and high schools has been declining for years. Clearly, our teachers just aren't doing their jobs these days.
Definition
False Cause - Oversimplified
Term
Today, all of us can look forward to a longer life span than our parents and grandparents. Obviously we owe our thanks to the millions of dedicated doctors who expend every effort to ensure our health.
Definition
False Cause - Oversimplified
Term
The quality of education our grade schools and high schools has been declining for years. Clearly, our teachers just aren't doing their jobs these days.
Definition
False Cause - Oversimplified
Term
A fair coin was flipped five times in a row, and each time it came up head. Therefore it is extremely likely that it will come up tails on the next flip.
Definition
False Cause - Gamblers Fallacy
Term
Immediate steps should be taken to outlaw pornography once and for all. The continued manufacture and sale of pornographic material will almost certainly lead to an increase in sex-related crimes such as rape and incest. This i turn will gradually erode the moral fabric of society and result in an increase in crimes of all sorts. Eventually a complete disintegration of law and order will occur, leading in the to the total collapse of civilization.
Definition
Slippery Slope
Term
Attempts to outlaw pornography threaten basic civil rights an should be summarily abandoned. If pornography is outlawed, censorship of newspapers and news magazines is only a short step away. After that there will be censorship of textbooks, political speeches, and the content of lectures delivered by university professors. Complete mind control by the central government will be the inevitable result.
Definition
Slippery Slope
Term
Harper's new car is bright blue, has leather upholster, and gets excellent gas mileage. Crowley's car is also bright blue and has leather upholstery. Therefore, it probably gets excellent gas mileage, too.
Definition
Weak Analogy
Term
The flow of electricity through a wire is similar to the flow of water through a pipe. Obviously a large-diameter pipe will carry a greater flow of water than a pipe of small diameter. Therefore, a large-diameter wire should carry a greater flow of electricity than a small diameter wire.
Definition
No Fallacy
Term
The flow of electricity through a wire is similar to the flow of water through a pipe. When water runs downhill through a pipe, the pressure at the bottom of the hill is greater than it is at the top. Thus, when electricity flows downhill through a wire the voltage should be greater at the bottom of the hill than at the top.
Definition
Weak Analogy
Term
Murder is morally wrong. This being the case, it follows that abortion is morally wrong.
Definition
Begging the Question
Term
Of course humans and apes evolved from common ancestors. Just look how similar they are.
Definition
Begging the Question
Term
It is obvious that the poor in this country should be given handouts from the government. After all, these people earn less than the average citizen.
Definition
Begging the Question
Term
Clearly, terminally ill patients have a right to doctor assisted suicide. After all, many of these people are unable to commit suicide by themselves.
Definition
Begging the Question
Term
The world in which we live displays an amazing degree organization. Obviously this world was created by an intelligent God.
Definition
Begging the Question
Term
Capital punishment is justified for the crimes of murder and kidnapping because it is quite legitimate and appropriate and that someone be put to death for having committed such hateful and inhuman acts.
Definition
Begging the Question
Term
Anyone who preaches revolution has a vision of the future for the simple reason that if a person has no vision of the future he could not possibly preach revolution.
Definition
Begging the Question
Term
Ford Motor Company clearly produces the finest cars in the united States. We know they produce the finest cars because they have the best design engineers. This is true because hey can afford to pay them more than any other manufacturers. Obviously they can afford to pay them more because they produce the finest cars in the United States.
Definition
Begging the Question
Term
No dogs are cats. Therefore, no cats are dogs.
Definition
No Fallacy
Term
London is in England and Paris is in France. Therefore, Paris is in France and London is in England.
Definition
No Fallacy
Term
Have you stopped cheating on exams?
Definition
Complex Question
Term
Where did you hide the pot you were smoking?
Definition
Complex Question
Term
Have you stopped beating your wife yet?
Definition
Complex Question
Term
How long must I put up with your snotty behavior?
Definition
Complex Question
Term
On April 9, did you see the defendant shoot the deceased?
Definition
No Fallacy
Term
Either you let me attend the Dixie Chicks concert or I'll be miserable for the rest of my life. I know that you don't want me to be miserable for the rest of my life, so it follows that you'll let me attend the concert.
Definition
False Dichotomy
Term
Either you use Ultra Guard deodorant or you risk the chance of perspiration odor. Surely you don't want to risk the chance of perspiration odor. Therefore you will want to use Ultra Guard deodorant.
Definition
False Dichotomy
Term
Either you bu only American made products or you don't deserve to be called a loyal American. Yesterday you bought a new Toyota. Therefore you don't deserve to be called an American.
Definition
False Dichotomy
Term
Either Seattle is in Washington, or its in Oregon. Seattle is not in Oregon. Therefore Seattle is in Washington.
Definition
No Fallacy
Term
Most dogs are friendly and pose no threat to people who pet them. Therefore, it would be safe to pet the little dog that is approaching us now.
Definition
Suppressed Evidence
Term
The ad for Kentucky Fried Chicken says, "Buy a bucket of Chicken and have a barrel of fun!" Therefore if we buy a bucket of chicken, we will be guaranteed to have lots of fun.
Definition
Suppressed Evidence
Term
During the past sixty years, Poland has enjoyed a rather low standard of living. Therefore, Poland will probably have a low standard of living for the next sixty years.
Definition
Suppressed Evidence
Term
Some triangles are obtuse. Whater is obtuse is ignorant. Therefore, some triangles are ignorant.
Definition
Equivocation
Term
Any law can be repealed by the legislative authority. But the law of gravity is a law. Therefore, the law of gravity ca be repealed by the legislative authority.
Definition
Equivocation
Term
We have a duty to do what is right. We have a right to speak out in defense of the innocent. Therefore we have a duty to speak out in defense of the innocent.
Definition
Equivocation
Term
A mouse is an animal. Therefore, a large mouse is a large animal.
Definition
Equivocation
Term
The tour guide said that standing in Greenwich Village, the empire State building could easily be seen. It follows that the Empire State Building is in Greenwich Village.
Definition
Amphiboly
Term
John told Henrey that he had made a mistake. It follows that John has at least the courage to admit his own mistakes.
Definition
Amphiboly
Term
Professor Johnson said that he will give a lecture about heart failure in the biology lecture hall. It must be the case that a number of heart failures have occurred there recently.
Definition
Amphiboly
Term
Mrs. Hart stated in her will, " I leave my 500-carat diamond necklace and my pet dog to Alice and Theresa." Therefore, we conclude that Alice gets the necklace and Theresa gets the dog.
Definition
Amphiboly
Term
Mr. James signed a contract that reads, "in exchange for painting my house, I promise to pay David $5000 and give him my new Cadillac only if he finishes the job by May 1st." Therefore since David did not finish the job until May 10, it follows that he did not the $5000 or the Cadillac.
Definition
Amphiboly
Term
Maria likes anchovies. She also likes ice cream. Therefore it is certain that she would like anchovy ice cream.
Definition
Composition
Term
Each player on this basketball team is an excellent athlete. Therefore the team as a whole is excellent.
Definition
Composition
Term
Each atom in this teacup is invisible. Therefore this teacup is invisible.
Definition
Composition
Term
Sodium and chlorine, the atomic components of sale, are both deadly poisons. Therefore, salt is a deadly poison.
Definition
Composition
Term
Every atom in this teacup has mass. Therefore the teacup as a whole has mass.
Definition
No Fallacy
Term
Every component in this picket fence is white. Therefore, the whole fence is white.
Definition
No Fallacy
Term
Less gasoline is consumed by a car than a truck. Therefore less gasoline is consumed in the United States by cars than by trucks.
Definition
Composition
Term
Salt is a nonpoisonous compound. Therefore, its component elements, sodium and chlorine are nonpoisonous.
Definition
Division
Term
This jigsaw puzzle,when assembled, is circular in shape. Therefore each piece of the jigsaw puzzle is circular in shape.
Definition
Division
Term
This teacup has mass. Therefore, the atoms that compose this teacup have mass.
Definition
No Fallacy
Term
This field up poppies is uniformly orange. Therefore, the individual poppies are orange.
Definition
No Fallacy
Term
Stanly Steamers have almost disappeared. This car is a Stanly Steamer. Therefore, it has almost disappeared.
Definition
Division
Term
The average American family has 2.5 children. The Jones family is an average American family. Therefore, the Jones family has 2.5 children.
Definition
Division
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