Here's an amusing metaphor for polarized US politics: take two Useless Machines (a box with a switch: when you press the switch, a hand shoots out of the box and switches it off again) and daisy-chain them so they battle to switch one another off.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.