This one's for you, HN.<p>I'm writing a book about the 'edge of the thinkable', how it developed over the years, centuries and millenia, and I'm sure you'll be interested in this. (Whenever I browse through HN, I think 'oh, I didn't think THAT was possible..'.<p>So, more soon, but I'd love it if you'd sign up for that (very, very occassional) status update newsletter. I'm sure it will include beta versions of the book, too!