"Conservatives have long argued, correctly, that 'fine-tuning' the economy is a chimera, but that argument seems to have disappeared from the conservative handbook."

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In whatever system where the weight attached to the wheel should be the cause of motion of the wheel, without any doubt the center of the gravity of the weight will stop beneath the center of its axle. No instrument devised by human ingenuity, which turns with its wheel, can remedy this effect. Oh, speculators about perpetual motion, how many vain chimeras have you created in the like quest. Go and take you place with the seekers after gold.

— Leonardo da Vinci