Meaning
A rhetorical trick in which someone advances a bold, controversial claim (the 'bailey') but, when challenged, retreats to a bland, easily defended version of it (the 'motte'), later quietly reasserting the bold claim once pressure lifts. Borrowed from medieval castle design, where the motte is the sturdy keep and the bailey the exposed courtyard. Informal and accusatory; naming something a motte and bailey alleges deliberate equivocation. Regional use: General English; strongest in online argument and philosophy-adjacent discourse.
Origin
Coined by philosopher Nicholas Shackel in his 2005 paper 'The Vacuity of Postmodernist Methodology' in the journal Metaphilosophy, where he named the 'Motte and Bailey Doctrine' after the medieval fortification to describe how postmodernist methodology paired defensible but dull core claims with bold indefensible extensions. Shackel himself prefers 'doctrine' to 'fallacy', though the phrase 'motte-and-bailey fallacy' became the common form online. For its first decade the term stayed mostly within academic philosophy, then spread into general internet and political commentary in the late 2010s, with mainstream political usage noted around 2020.
Research Sources
References used to check this entry’s meaning, history, or documented forms.
Variants
- Motte and Bailey Doctrine
- motte and bailey fallacy
- motte-and-bailey doctrine
Usage Examples
- The professor's motte-and-bailey move was to defend a trivially true version of the claim in the seminar and assert the radical version in the abstract.
- When pressed, the campaign fell back to the motte that 'families matter', but the bailey they advertised was far more contentious.
- That's a classic motte and bailey: the headline says one thing and the retreat position says almost nothing.