This is one of those stories that is trying so hard to be something significant that it undermines itself and becomes substance-less instead. I liked Sono and his grandfather. I liked that you could feel their affection for each other. It was almost enough to overcome how very staged their conversations were. Like Podlipny was just desperate to be seen as witty and insightful. But in the end it wasn't enough to carry the story.
The thing is that I would have put up with overly sarcastic banter and stiff, PURPLE prose but the book had no discernible plot. There is a lot of explaining the world, but no reason that we're there following Sono in the first place. What's more, you can feel from a very early stage how the book will end—in some predictably unpredictable strangeness that leaves the reader wondering WTF they just read and what the point was. I might not have guessed exactly what twist of reality would be dropped in the readers lap, but I saw the 'let me blow your mind with the unexpected' coming from a very long way off and was just as disappointed by it as I expected to be. Had it managed to pull the random discussions together, it could have redeemed the book. But it didn't.
In the end, I finished Turn thinking, "Well, that was a collection of random words that went nowhere and accomplished nothing." Maybe it was just too esoteric for me. Maybe I'm not smart enough for it. Whatever, it was prettily written but that's about it.