There are books in which every single sentence is important and is somehow related to the overall plot of the book, like in Agatha Christie's novels, Alistair MacLean's novels. And there are novels like The Hitchhiker's Guide to the Galaxy in which many sentences are neither important nor related, and is as unrelated as it could ever be. It is just - as somebody has rightly reviewed - whimsical insanity. A total timepass read. Not hilarious but definitely comic. If Wodehouse had come across Douglas, he would have said 'Just goes to show that it makes all kinds of people to make this world'.