"Perseverance will be required"
Hmm. The listener hears a lot of internal monologues. A lot. And philosophical speculation and what-ifs. While it is interesting, it chokes up the first 8 hours of the book, requiring perseverance. After that, things start to roll. The "real" story takes shape, characters start becoming real and the plot lines unfold.
However, I don't know if I would have stuck it out, if I had realized that this is apparently not part of a series, but a stand alone novel. At the time, I took the 8 fallow hours as investment. There are also some ideas that the author seems unable to pursue sufficiently, so maybe they should just have been edited out, or in some cases, fleshed out.
Slightly surprising, mildly disappointing
varied, intense, enthusiastic
In spite of the overall disappointment, I will definitely give David Brin's Uplift books a go. He is clearly an intelligent, deep thinker with story-telling abilities. I just wouldn't choose Existence to showcase his talent
For all the work he put into it and all the ground work the listener/reader has to endure, there should be more books building on Existence