Didn't like the writing, it felt really rushed, which makes sense since the entire book was written in a week. The writer talks about fast paced execution, but the book itself showed me that this comes at the cost of quality.
Really liked how the story starts at the very beginning and moves billions of years to the future and builds up to a climax. I'm not really sure how I feel about the ending though. Maybe I need to reed that a couple of more times to really understand what's happening.