Asimov proves again that the foundation universe has space to fit much more things to the plot. Throughout the book I was really caught in the chase of earth an how the second foundation would handle it. In the end, the feeling of needing to read the next book was unbearable.

Although, the book has some issues that really bothered me. First, unlike in most of his books, this contains many unexplained stuff. Usually, Asimov goes trough great lengths to make all piece of tech or knowledge in his books credible and "scientifically accurate". But on this book, this does not happen. For example, the gravitation ship engine, the mind control terminal and even the unexplained mind shield. That really bothered me.

Another thing that really made me sad was that many facts happened with a degree of serendipity that was not believable. Ok, I admit, the fact that Trevize could "sense" what was right was a great way out, and was very coherent. But, the facts about Earth that Pelorat describes are too much accurate to seems a long lost legend. If you go back to Prelude to Foundation you will find that information about Earth and Robots are completely lost and barely touched.

Summing up, still a great book. Let's go for the final one.