Instead of a reread of the book I'm listening to the Audible recording of the book, 21years after it was published, on one of the science chapters which I find interesting is about elements and the periodic table of roundworld and discworld compared. I just found why I think the company was named Narrativa, named after or taken from the Discworld's Narrativium element who's properties are: The characteristic feature of Narrativium is that it makes stories hang together. The human mind loves a good dose of narrativium. 


