No true Scotsman

No true Scotsman, or appeal to purity, is an informal fallacy in which one attempts to protect their generalized statement from a falsifying counterexample by excluding the counterexample improperly.[1][2][3] Rather than abandoning the falsified universal generalization or providing evidence that would disqualify the falsifying counterexample, a slightly modified generalization is constructed ad-hoc to definitionally exclude the undesirable specific case and similar counterexamples by appeal to rhetoric.[4] This rhetoric takes the form of emotionally charged but nonsubstantive purity platitudes such as "true", "pure", "genuine", "authentic", "real", etc.[2][5]

Philosophy professor Bradley Dowden explains the fallacy as an "ad hoc rescue" of a refuted generalization attempt.[1] The following is a simplified rendition of the fallacy:[6]

Person A: "No Scotsman puts sugar on his porridge."
Person B: "But my uncle Angus is a Scotsman and he puts sugar on his porridge."
Person A: "But no true Scotsman puts sugar on his porridge."

Occurrence

The "no true Scotsman" fallacy is committed when the arguer satisfies the following conditions:[7][3][4]

  • not publicly retreating from the initial, falsified assertion
  • offering a modified assertion that definitionally excludes a targeted unwanted counterexample
  • using rhetoric to hide the modification

An appeal to purity is commonly associated with protecting a preferred group. Scottish national pride may be at stake if someone regularly considered to be Scottish commits a heinous crime. To protect people of Scottish heritage from a possible accusation of guilt by association, one may use this fallacy to deny that the group is associated with this undesirable member or action. "No true Scotsman would do something so undesirable"; i.e., the people who would do such a thing are tautologically (definitionally) excluded from being part of our group such that they cannot serve as a counterexample to the group's good nature.[4]

Origin and other examples

The description of the fallacy in this form is attributed to British philosopher Antony Flew, who wrote, in his 1966 book God & Philosophy,

In this ungracious move a brash generalization, such as No Scotsmen put sugar on their porridge, when faced with falsifying facts, is transformed while you wait into an impotent tautology: if ostensible Scotsmen put sugar on their porridge, then this is by itself sufficient to prove them not true Scotsmen.

Antony Flew

In his 1975 book Thinking About Thinking, Flew wrote:[4]

Imagine some Scottish chauvinist settled down one Sunday morning with his customary copy of The News of the World. He reads the story under the headline, "Sidcup Sex Maniac Strikes Again". Our reader is, as he confidently expected, agreeably shocked: "No Scot would do such a thing!" Yet the very next Sunday he finds in that same favourite source a report of the even more scandalous on-goings of Mr Angus McSporran in Aberdeen. This clearly constitutes a counter example, which definitively falsifies the universal proposition originally put forward. ('Falsifies' here is, of course, simply the opposite of 'verifies'; and it therefore means 'shows to be false'.) Allowing that this is indeed such a counter example, he ought to withdraw; retreating perhaps to a rather weaker claim about most or some. But even an imaginary Scot is, like the rest of us, human; and none of us always does what we ought to do. So what he is in fact saying is: "No true Scotsman would do such a thing!"

The essayist David P. Goldman, writing under his pseudonym "Spengler", compared distinguishing between "mature" democracies, which never start wars, and "emerging democracies", which may start them, with the "no true Scotsman" fallacy. Spengler alleges that political scientists have attempted to save the "US academic dogma" that democracies never start wars against other democracies from counterexamples by declaring any democracy which does indeed start a war against another democracy to be flawed, thus maintaining that no true and mature democracy starts a war against a fellow democracy.[6]

Author Steven Pinker suggests that phrases like "no true Christian ever kills, no true communist state is repressive and no true Trump supporter endorses violence" are explained by the no true Scotsman fallacy.[8]

See also

References

  1. "Fallacies". Internet Encyclopedia of Philosophy. Retrieved 2022-02-09.
  2. Curtis, Gary N. "The No-True-Scotsman Fallacy". Fallacy Files. Retrieved 2016-11-12.
  3. Antony Flew, God & Philosophy, p. 104, Hutchinson, 1966.
  4. Antony Flew (1975). Thinking About Thinking (or, Do I Sincerely Want to be Right?). Fontana/Collins. p. 47. ISBN 9780006335801.
  5. Govier, Trudy (1992). "A Practical Study of Argument: Looking At Language: Persuasive Definitions". S2CID 172403515. {{cite journal}}: Cite journal requires |journal= (help)
  6. Goldman, David P. (31 Jan 2006). "No true Scotsman starts a war". Asia Times. Archived from the original on 5 January 2019. Retrieved 1 December 2014. political-science professors... Jack Mansfield and Ed Snyder distinguish between 'mature democracies', which never, never start wars ('hardly ever', as the captain of the Pinafore sang), and 'emerging democracies', which start them all the time, in fact far more frequently than do dictatorships
  7. Robert Ian Anderson, "Is Flew's No True Scotsman Fallacy a True Fallacy? A Contextual Analysis", P. Brézillon et al. (eds.): CONTEXT 2017, LNAI 10257, pp. 243–253, 2017. doi:10.1007/978-3-319-57837-8_19
  8. Pinker, Steven (2021). Rationality, What It Is, Why It Seems Scarce, Why It Matters. Penguin Books Limited. ISBN 978-0241380307.
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