I do enjoy the Discworld books... especially stories pertaining to the wizards so that was a thumbs-up for this book. The other half of the book... the sciency stuff was hard going at times. I can deal with topics involving biology, evolution & human ideology, however, quantum physics & other similar topics leave my head reeling a bit. Because of this I did tend to skim over the more physics-based chapters.

Apart from the occasional lapses into dreaded physics this 2nd book gets to grips with human "narrativium" & the development of stories within our species pretty well & is, overall, an enjoyable read.