‘Here’s something I came up with quite recently on commission for the Duke of Wellington.’ He uttered this with evident pride. ‘The Greek word idiótes can mean a fool, as our idiot implies. But it also carries the definition of one who is private, unengaged with worldly affairs – his idiocy is derived not from lack of natural faculties, but from ignorance and lack of education. When we translate idiótes to idiot, it has the effect of removing knowledge. This bar, then, can make you forget, quite abruptly, things you thought you’d learned. Very nice when you’re trying to get enemy spies to
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