If you run a single-threaded application on a multi-core machine you might even make your application run faster by switching off all but your first core.

I bet a lot of people continued to write machine language until the processor, like a bartender eager to close up and go home, finally kicked them out by switching to a RISC instruction set.

Metal-workers, of the johar caste, are increasingly switching to carpentry, as machine-tooled implements become more common in agriculture.