Far out in the uncharted backwaters of the unfashionable end of the western spiral arm of the Galaxy lies a small unregarded yellow sun.

Orbiting this at a distance of roughly ninety-two million miles is an utterly insignificant little blue green planet whose ape-descended life forms are so amazingly primitive that they still think digital watches are a pretty neat idea.

This planet has—or rather had—a problem, which was this: most of the people on it were unhappy for pretty much of the time. Many solutions were suggested for this problem, but most of these were largely concerned with the movements of small green pieces of paper, which is odd because on the whole it wasn’t the small green pieces of paper that were unhappy.

And so the problem remained; lots of the people were mean, and most of them were miserable, even the ones with digital watches.

Many were increasingly of the opinion that they’d all made a big mistake in coming down from the trees in the first place. And some said that even the trees had been a bad move, and that no one should ever have left the oceans.

And then, one Thursday, nearly two thousand years after one man had been nailed to a tree for saying how great it would be to be nice to people for a change, one girl sitting on her own in a small café in Rickmansworth suddenly realized what it was that had been going wrong all this time, and she finally knew how the world could be made a good and happy place. This time it was right, it would work, and no one would have to get nailed to anything.

Sadly, however, before she could get to a phone to tell anyone about it, a terribly stupid catastrophe occurred, and the idea was lost forever.

This is not her story.

But it is the story of that terrible stupid catastrophe and some of its consequences.

It is also the story of a book, a book called The Hitch Hiker’s Guide to the Galaxy—not an Earth book, never published on Earth, and until the terrible catastrophe occurred, never seen or heard of by any Earthman.

Nevertheless, a wholly remarkable book.

In fact it was probably the most remarkable book ever to come out of the great publishing houses of Ursa Minor—of which no Earthman had ever heard either.

Not only is it a wholly remarkable book, it is also a highly successful one—more popular than the Celestial Home Care Omnibus, better selling than Fifty More Things to do in Zero Gravity, and more controversial than Oolon Colluphid’s trilogy of philosophical blockbusters Where God Went Wrong, Some More of God’s Greatest Mistakes and Who is this God Person Anyway?

In many of the more relaxed civilizations on the Outer Eastern Rim of the Galaxy, the Hitch Hiker’s Guide has already supplanted the great Encyclopedia Galactica as the standard repository of all knowledge and wisdom, for though it has many omissions and contains much that is apocryphal, or at least wildly inaccurate, it scores over the older, more pedestrian work in two important respects.

First, it is slightly cheaper; and secondly it has the words DON’T PANIC inscribed in large friendly letters on its cover.

But the story of this terrible, stupid Thursday, the story of its extraordinary consequences, and the story of how these consequences are inextricably intertwined with this remarkable book begins very simply.

It begins with a house.

The house stood on a slight rise just on the edge of the village. It stood on its own and looked over a broad spread of West Country farmland. Not a remarkable house by any means—it was about thirty years old, squattish, squarish, made of brick, and had four windows set in the front of a size and proportion which more or less exactly failed to please the eye.

The only person for whom the house was in any way special was Arthur Dent, and that was only because it happened to be the one he lived in. He had lived in it for about three years, ever since he had moved out of London because it made him nervous and irritable. He was about thirty as well, dark haired and never quite at ease with himself. The thing that used to worry him most was the fact that people always used to ask him what he was looking so worried about. He worked in local radio which he always used to tell his friends was a lot more interesting than they probably thought. It was, too—most of his friends worked in advertising.

It hadn’t properly registered with Arthur that the council wanted to knock down his house and build an bypass instead.

At eight o’clock on Thursday morning Arthur didn’t feel very good. He woke up blearily, got up, wandered blearily round his room, opened a window, saw a bulldozer, found his slippers, and stomped off to the bathroom to wash.

Toothpaste on the brush—so. Scrub.

Shaving mirror—pointing at the ceiling. He adjusted it. For a moment it reflected a second bulldozer through the bathroom window. Properly adjusted, it reflected Arthur Dent’s bristles. He shaved them off, washed, dried, and stomped off to the kitchen to find something pleasant to put in his mouth.

Kettle, plug, fridge, milk, coffee. Yawn.

The word bulldozer wandered through his mind for a moment in search of something to connect with.

The bulldozer outside the kitchen window was quite a big one.

He stared at it.

“Yellow,” he thought and stomped off back to his bedroom to get dressed.

Passing the bathroom he stopped to drink a large glass of water, and another. He began to suspect that he was hung over. Why was he hung over? Had he been drinking the night before? He supposed that he must have been. He caught a glint in the shaving mirror. “Yellow,” he thought and stomped on to the bedroom.

He stood and thought. The pub, he thought. Oh dear, the pub. He vaguely remembered being angry, angry about something that seemed important. He’d been telling people about it, telling people about it at great length, he rather suspected: his clearest visual recollection was of glazed looks on other people’s faces. Something about a new bypass he had just found out about. It had been in the pipeline for months only no one seemed to have known about it. Ridiculous. He took a swig of water. It would sort itself out, he’d decided, no one wanted a bypass, the council didn’t have a leg to stand on. It would sort itself out.

God what a terrible hangover it had earned him though. He looked at himself in the wardrobe mirror. He stuck out his tongue. “Yellow,” he thought. The word yellow wandered through his mind in search of something to connect with.

Fifteen seconds later he was out of the house and lying in front of a big yellow bulldozer that was advancing up his garden path.

Mr. L. Prosser was, as they say, only human. In other words he was a carbon-based life form descended from an ape. More specifically he was forty, fat and shabby and worked for the local council. Curiously enough, though he didn’t know it, he was also a direct male-line descendant of Genghis Khan, though intervening generations and racial mixing had so juggled his genes that he had no discernible Mongoloid characteristics, and the only vestiges left in Mr. L Prosser of his mighty ancestry were a pronounced stoutness about the tum and a predilection for little fur hats.

He was by no means a great warrior: in fact he was a nervous worried man. Today he was particularly nervous and worried because something had gone seriously wrong with his job—which was to see that Arthur Dent’s house got cleared out of the way before the day was out.

“Come off it, Mr. Dent,” he said, “you can’t win you know. You can’t lie in front of the bulldozer indefinitely.” He tried to make his eyes blaze fiercely but they just wouldn’t do it.