Imagine, then, that the brain is a big room full of machines and I’m a little creature with a big head sitting on a stool pushing buttons. I’ve been shutting down machines I don’t need, or largely retasking them, and wiring them to the central console with bits of splice cable, and then I’ve been running a drip feed into that central console so that it looks as if really important stuff is still in there. Or if you prefer: when Catherine the Great told her chancellor that she wanted to ride out in the great Empire of Russia and meet the happy peasants everyone kept telling her lived there, the chancellor—his name was Potemkin—understood immediately that shit-caked, disease-ridden serfs begging from frostbitten lips and extending three-fingered hands to their absolute monarch would not entirely fill her with joy. So he grabbed a couple of hundred minor nobles and dressed them as peasants and paid them off. Then he built a bunch of fake villages and rode Catherine through them, and she was delighted to see that agricultural labour was surprisingly easy and the soil of Russia was amazingly fertile even without much assistance from mankind. She was thrilled at the beauty of her subjects and at their surprisingly educated voices as they sang and tilled the soil. She went back to the palace and eventually died at the age of sixty-seven, still at least notionally unaware that she ruled an impoverished, brutal nation ripening towards a staggering violence. (She died of a stroke. There was, contrary to the prurient slander, no horse penis involved.)