I think with now being in the process of reading the Globe, after reading the first book in the series a good while back, it's not exactly necessary to read them in order, but it helps as the first book does get referenced a fair bit and the Globe covers the human aspect of Roundworld that the first skipped over as it was more about the evolution of the Universe/Galaxy and the making of the solar system and of Earth with the wizards studying the various dominant lifeforms as they emerge - except for us as they only viewed the very beginning (of an ape who walked on 2 legs and could communicate with others of their breed pretty well) and a putative end of our 'reign' as top dog species, when Earth has been abandoned (a very Arthur C. Clarke solution).
The Globe is concerned with the time span and history of the human evolution and civilisation and concentrating on the intellect and the development of science and presumably Darwin's Watch is more concerned with genetics and evolution in general - pooh might be able to enlighten us on that as I know he's rather fond of this subject and has read the 3rd book with a lot of relish...
PS - will have a reply for you in the ToT discussion tomorrow Kakaze as it's rather late here now...
