Donal says many interesting things but for now let me comment on one, no doubt minor, point.
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If this is right, we might ask a Wittgensteinian to flesh out some examples of such creatures (as we might ask the early Wittgenstein for an example of so-called 'simples'**).
Wittgenstein was once asked about the nature of the logically simple objects in the /Tractatus/. His answer was that he'd never given any thought to that; he had believed his job was finished when he'd shown that there must be such things (and that he now believed the whole enterprise had been misconceived).
Robert Paul