If you were a clownfish, swimming languidly and contentedly amongst the anemones on a coral reef, you would assume that the charming ecosystem you inhabit is the entire universe. But suppose a diver with a net appears and lifts you out of the sea. You see creatures you've never seen before. You see boats and a coastline and the sky above. Suddenly it dawns on you that your world is just a small part of a much larger and weirder macrocosm than you could have ever imagined in your wildest dreams.And what if there is a universe in which clownfish are keen on tennis and frequently speak in rhyme?And what if this isn't a hypothetical question?
