The One was such a great book.  Great premise and executed flawlessly.  So many shockers that it kept me on my toes.  I could get behind the science of it too. It would ruin the whole concept of dating and butterflies, but at least you would know you not wasting time on the wrong person.  Unless there was a glitch.  Some of these characters set themselves up.  Come on people.  This book reminded me of a documentary called Twin Flame.  Such chaos.  Look it up. This is a solidly entertaining and thought provoking book.  Deserving of more stars.