Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so.
A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.
It is a well-known fact that those people who must want to rule people are, ipso facto, those least suited to do it... anyone who is capable of getting themselves made President should on no account be allowed to do the job.
People wanted me to do a CD-ROM of 'Hitchhiker's,' and I thought, 'No, no.' I didn't want to just sort of reverse-engineer yet another thing from a book I'd already written. I think that the digital media are interesting enough in their own right to be worth originating something in.