Full Idea
If many otherwise ordinary people turned out to have skulls which were empty or filled with oatmeal, would that mean that they didn't have minds?
Gist of Idea
If a normal person lacked a brain, would you say they had no mind?
Source
Georges Rey (Contemporary Philosophy of Mind [1997], 7.1.4)
Book Reference
Rey,Georges: 'Contemporary Philosophy of Mind' [Blackwell 1997], p.189
A Reaction
That's a John Locke sort of question, implying that 'persons' are logically independent of their implementation. Personally I would search for a radio receiver, because oatmeal is implausible as a thinker.