You know Sven? The man who takes care of the gym?' he asked. He waited till he got a nod from Nicholson. 'Well, if Sven dreamed tonight that his dog died, he'd have a very, very bad night's sleep, because he's very fond of that dog. But when he woke up in the morning, everything would be all right. He'd know it was only a dream.' Nicholson nodded. 'What's the point exactly?' The point is if his dog really died, it would be exactly the same thing. Only he wouldn't know it. I mean he wouldn't wake up till he died himself.