Recording their brainwaves isn't the issue, interpreting them is, which is pretty damn impossible. The mind is not a book that might be read with the proper equipment, most of our thoughts do not even occur descriptively (your mind's voice), rather conceptually, which can neither be represented in any other form without the thinker translating for us. You'd need a willing participant to interpret your readings, essentially telling you what he is thinking in the usual way. [/offtopic]
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