"Story OK, Narration Mixed"
I am a huge OSC fan, having read/listened to many books. This story is not as strong or mature as most stories. Feels half polished. The majority of the narration is good, but the second half of the book sees some narrator changes that are inconsistent and one chapter is downright annoying enough that I stopped playback 4 times. At times I felt like I was listening to Treasure Island. I wish the story and narration was as polished as the excellent Ender's Game and Ender's Shadow on Audible.
Theories about causality and time travel.
Changes in the actual narrator and voicing were very inconsistent in the second half. It detracted from the character development and caused me to pause playback several times.