The offending, protruding nail is my enemy, and my hammer and I work together to defeat it. We might think that we should distinguish between what the hammer is and what it is to me, but that doesn’t work. If I’ve never seen a hammer before, if I don’t know its proper use, if I pick it up and start to scratch my back with it, it’s not merely that I don’t know how to use the hammer properly. I don’t even know what the thing is unless I know it as a hammer, as something to drive nails with. It’s not
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