Trap · reasoning move
◆ Motte and bailey
Sounds like: “[A bold claim] — when challenged: 'All I said was [a modest one].'”
An argument that advances a big, contested claim, retreats to a small, obvious one when pressed, and re-advances once the pressure is off.
Signs
the claim gets smaller when you question it and bigger when you stop; the defender answers a claim you didn't challenge; the slogan's supporters give incompatible answers to 'what exactly do you mean?'.
Questions to ask
Which exact claim are we discussing — can we write it down? If I grant the modest version, do you still hold the bold one — on what evidence? What would the slogan look like if it said only the modest thing?
Example
'Free Palestine' defended as 'freedom for Gazans' after being chanted with 'from the river to the sea'.
The mirror
'right to self-defence' defended as 'against rockets' after being invoked for every strike.
What it is.
Named after a medieval castle: the bailey is the pleasant, productive but hard-to-defend land; the motte is the steep mound you retreat to under attack. In argument, the bailey is the ambitious claim you want; the motte is the defensible one you fall back on. Coined for rhetoric by the philosopher Nicholas Shackel (2005). It usually runs on an overloaded word — which is why this site's term entries (Palestine, Zionism, occupation, genocide, apartheid) come first.
referenceNicholas Shackel, 'The Vacuity of Postmodernist Methodology', Metaphilosophy 36(3) (2005)
Origin of the term 'motte and bailey doctrine'.
Examples from both directions.
'Free Palestine': motte — Palestinians deserve freedom; bailey — the whole land from the river to the sea. 'Apartheid': motte — two legal systems in the West Bank; bailey — Israel as such must be dismantled. 'Anti-Zionism isn't antisemitism': motte — criticising a policy; bailey — excluding most Jews. From the other side: 'Israel has a right to defend itself': motte — against attacks; bailey — any action in Gaza is self-defence. 'There's no such thing as a Palestinian': motte — no Palestinian state existed before 1948; bailey — the people have no claim.
Why it works on us
- The modest claim really is true, and people who hold the bold one often sincerely believe they're only saying the modest one.
- Slogans compress: nobody chants a paragraph, so a short phrase carries several meanings at once.
- Challenging the bold claim can look like denying the modest one.
Where this trap shows up
Your side does it too — look at both columns.