A wonderful addition to the original trilogy "Darwinian Extension'. Brings the previous story to a conclusion and perhaps a fresh beginning. Please read the first three books in that series before this one. The subsequent discoveries and events on and near Nexus revealed and explained in this novel are fascinating. I wonder where his imagination might take this tale next?
How may books did Asimov and Clarke write before they were discovered by the mass Sci-Fi or wider readership? Great stories in this genre both predict and guide elements of the future, and I suspect this is in that category.
Thoughtful, cult reading waiting to be discovered.....