Seveneves

Nice start, ok mid, but the ending was so bad I have a hard time putting it to words. For a book that had such a good idea for a beginning, I have no idea why it switched directions at the end to a different type of book. It went from a Good/OK Sifi book to a run of the mill teen dystopian book. The ending could have been made into a second book possibly saving both (there are some nice ideas for a young adult novel).