The fourth book in the Science of Discworld series & this time around dealing with The Really Big Questions Terry Pratchett's brilliant new Discworld story. Judgement Day is annotated with very big footnotes (the interleaving chapters) by mathematician Ian Stewart & biologist Jack Cohen to bring you a mind-mangling combination of fiction cutting-edge science & philosophy. Marjorie Daw is a librarian & takes her job
- & indeed the truth of words
- very seriously. She doesn't know it but her world & ours
- Roundworld
- is in big trouble. On Discworld a colossal row is brewing. The Wizards of Unseen University feel responsible for Roundworld (as one would for a pet gerbil). After all they brought it into existence by bungling an experiment in Quantum Thaumo Dynamics. But legal action is being brought against them by Omnians who say that the Wizards' god-like actions make a mockery of their noble religion. As the finest legal brains in Discworld (a zombie & a priest) gird their loins to do battle
- & when the Great Big Thing in the High Energy Magic Laboratory is switched on
- Marjorie Daw finds herself thrown across the multiverse & right in the middle of the whole explosive affair. As God the Universe & frankly Everything Else is investigated by the trio you can expect world-bearing elephants quantum gravity in the Escher-verse evolutionary design eternal inflation dark matter disbelief systems
- & an in-depth study of how to invent a better mousetrap.