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Mala Fides (Arguing in Bad Faith; also Sophism): Using an argument that the arguer himself or herself knows is not valid. E.g., An unbeliever attacking believers by throwing verses from their own Holy Scriptures at them, or a lawyer arguing for the innocence of someone whom s/he knows full well...

The Law of Unintended Consequences (also, "Every Revolution Ends up Eating its own Young:" Grit; Resilience Doctrine): In this very dangerous, archly pessimistic postmodern fallacy the bogus "Law of Unintended Consequences," once a semi-humorous satirical corollary of "Murphy's Law," is elevated...

Infotainment (also Infortainment; Fake News; InfoWars); A very corrupt and dangerous modern media-driven fallacy that deliberately and knowingly stirs in facts, news, falsities and outright lies with entertainment, a mixture usually concocted for specific, base ideological and profit-making...

Heroes All (also, "Everybody's a Winner"): The contemporary fallacy that everyone is above average or extraordinary. A corrupted argument from pathos (not wanting anyone to lose or to feel bad). Thus, every member of the Armed Services, past or present, who serves honorably is a national hero...

Gaslighting: A recently-prominent, vicious fallacy of logic, denying or invalidating a person's own knowledge and experiences by deliberately twisting or distorting known facts, memories, scenes, events and evidence in order to disorient a vulnerable opponent and to make him or her doubt his/her...

Salacious Fallacy, falsely attracting attention to and thus potential agreement with one's argument by inappropriately sexualizing it, particularly connecting it to some form of sex that is perceived as deviant, perverted or prohibited (E.g., Arguing against Bill Clinton's presidential legacy by...

Essentializing: A fallacy of logos that proposes a person or thing “is what it is and that’s all that it is,” and at its core will always be the way it is right now (E.g., "All terrorists are monsters, and will still be terrorist monsters even if they live to be 100," or "'The poor you will...

Equivocation: The fallacy of deliberately failing to define one's terms, or knowingly and deliberately using words in a different sense than the one the audience will understand. (E.g., President Bill Clinton stating that he did not have sexual relations with "that woman," meaning no sexual...

The Dunning-Kruger Effect: A cognitive bias that leads people of limited skills or knowledge to mistakenly believe their abilities are greater than they actually are. (Thanks to Teaching Tolerance for this definition!) E.g., "I know Washington was the Father of His Country and never told a lie...

Disciplinary Blinders: A very common contemporary scholarly or professional fallacy of ethos (that of one's discipline, profession or academic field), automatically disregarding, discounting or ignoring a priori otherwise-relevant research, arguments and evidence that come from outside one's own...

Defensiveness (also, Choice-support Bias: Myside Bias): A fallacy of ethos (one's own), in which after one has taken a given decision, commitment or course of action, one automatically tends to defend that decision and to irrationally dismiss opposing options even when one's decision later on...

Confirmation Bias: A fallacy of logos, the common tendency to notice, search out, select and share evidence that confirms one's own standpoint and beliefs, as opposed to contrary evidence. This fallacy is how "fortune tellers" work--If I am told I will meet a "tall, dark stranger" I will be on...

Bribery (also, Material Persuasion, Material Incentive, Financial Incentive). The fallacy of "persuasion" by bribery, gifts or favors is the reverse of the Argumentum ad Baculum. As is well known, someone who is persuaded by bribery rarely "stays persuaded" in the long term unless the bribes...

Blind Loyalty (also Blind Obedience, Unthinking Obedience, the "Team Player" appeal, the Nuremberg Defense): The dangerous fallacy that an argument or action is right simply and solely because a respected leader or source (a President, expert, one’s parents, one's own "side," team or country...

The Big Brain/Little Brain Fallacy (also, the Führerprinzip; Mad Leader Disease): A not-uncommon but extreme example of the Blind Loyalty Fallacy below, in which a tyrannical boss, military commander, or religious or cult-leader tells followers "Don't think with your little brains (the brain in...

Argumentum ex Silentio (Argument from Silence): The fallacy that if available sources remain silent or current knowledge and evidence can prove nothing about a given subject or question this fact in itself proves the truth of one's claim. E.g., "Science can tell us nothing about God. That proves...

The Argument from Motives (also Questioning Motives): The fallacy of declaring a standpoint or argument invalid solely because of the evil, corrupt or questionable motives of the one making the claim. E.g., "Bin Laden wanted us to withdraw from Afghanistan, so we have to keep up the fight!" Even...

The Argument from Ignorance (also, Argumentum ad Ignorantiam): The fallacy that since we don’t know (or can never know, or cannot prove) whether a claim is true or false, it must be false, or it must be true. E.g., “Scientists are never going to be able to positively prove their crazy theory...

The Appeal to Tradition: (also, Conservative Bias; Back in Those Good Times, "The Good Old Days"): The ancient fallacy that a standpoint, situation or action is right, proper and correct simply because it has "always" been that way, because people have "always" thought that way, or because it...

The Appeal to Heaven: (also, Argumentum ad Coelum, Deus Vult, Gott mit Uns, Manifest Destiny, American Exceptionalism, or the Special Covenant): An ancient, extremely dangerous fallacy (a deluded argument from ethos) that of claiming to know the mind of God (or History, or a higher power), who...