Mark Haddon

And when I was asleep I had one of my favourite dreams. (...) And in the dream nearly everyone on the earth is dead, because they have caught a virus. But it's not like a normal virus. It's like a computer virus. And people catch it because of the meaning of something an infected person says and the meaning of what they do with their faces when they say it, which means that people can also get it from watching an infected person on television, which means that it spreads around the world really quickly.