3 1/2 stars: Good book that could have been a great book.
In need of editing and better typesetting: "And I thought, That's my older brother."
Russell is not a believable character, and that makes it impossible to connect with him. His inner dialogue rambles and does not match his behavior. Ben is well drawn once his brain is damaged, but younger Ben is overdone and one dimensional. Most of the secondary characters don't feel authentic.
The flow of the story is good, and the book is easy to read (with the exception of a couple of sections toward the end). But, I didn't find the ending satisfying: Ben is going to be happy living in a small NYC apartment with a house cleaner as his new buddy? Not likely.