I think it was just a joke. And his estate has the resources to be silly, so why not?
If anyone wants to do an academic study of his work, then maybe in 50 years this stuff would be interesting to look at. Maybe he'll be taught in English Literature by that time?
I really liked the Salmon of Doubt. The first couple of chapters of unfinished book starts were rubbish, but I bought it for the collection of his journalism and essays. And that was great.
I feel Adams only wrote 6 good books. The first 3 Hitch Hikers, the 2 Dirk Gently (his best I think), and Last Chance to See.
Pratchett didn't have the same writing-demons. I suspect that if he had early ideas that he really wanted written, he'd have got round to writing them.
Biting the hand that feeds IT
