I found it very ... curious style. We will say bombastic.
The subject, the mystery and the investigation are interesting, but the heaviness of writing in the first person, omnipresent, annoyed me throughout playback.
The universe described is quite disturbing: one believes nowadays and even in the twentieth century with the characters who live like you and me, and suddenly they are in hyper-space jump talking to IA ... As if the author had transposed his daily 6000 years in the future. Similarly, references are released by the characters (places, events), without any explanation if not artificially give thickness to their speech.
The end is interesting, but takes on a dozen page, totally sloppy.
It's a shame some passages was very good (different spatial discoveries for instance).
