Fantastic! It feels like a fourth installment in the "Back to the Future" franchise. The science is smart, the history is smart, the characters are each unique and relatable, and the plot is non-stop intrigue and adrenaline. Not to mention, this book has a lot to say about /people/: what we've become as a society, what we ought to honor from those who came before us, the callous way we treat veterans or academics... Blew me away how well this book balanced being intellectual and being entertaining <3 <3 <3.