i read the book twice over and i'm in the proecess of reading Life, the Universe and Everything. The questions have to be open ended... one of them that i did was if arthur, zaphod and ford had previously had another adventure that is different from the book, because of what Adams had said one time:
: ?There is a theory which states that if ever anybody discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another theory which states that this has already happened. ?
so i brought up the point that things could have turned out differently, if the vogons had been 5 days late destroying earth and they had found the ultimate question etc.