The book structure is one narrative chapter (set in the Ankh-Morpork Unseen University) written by Pratchett, followed by one discussing the ideas and the development of the universe, written (probably) by the two other authors, and probably revised by Pratchett to inject a bit of humour and discworldism.
It's pretty enjoyable as a read, and marred only by the fact that it is probably a bit outdated by recent developments.
So why the 2 stars? I think that as a book it is well written and enjoyable, and probably an interesting way to divulge some pretty heavy scientific concepts (Big Bang, Relativity, Quantum Theory, Evolution, both old style and "Punctuated Equilibrium", the destiny of Man, how the brain works...) but maybe I wasn't the right person for the book. Not that I didn't learn anything new, it's just that I am not really interested in this kind of books, and prefer my texts to have an higher level of Narrativium in them......Continua