The 21st century foundation trilogy sponsored by Asimov's Estate employed fantastic authors -- the "killer B's," Benford, Bear, and Brin." But the first book published in 2000 was bad, 2/5 stars and messed up the entire trilogy. I really dislike the "sims" (simulated personalities of Voltaire and Jean d'Arc). And the introduction of extra new elements, including tiktoks, mentalics with specific super-powers, new casts and cultures, and especially worm holes really messed up everything. If you write inside a masters universe, don't completely change his universe. So anyway, Bear's novel was not as terrible as the first one, 3/5 stars. I am now on to Brin's final book in the series. . .