Sometimes a book is so good you don't want to finish it. This is happening to me again while reading Mindf*ck by Christopher Wylie. I've started reading this book three days ago, and I have around 30 pages to finish. It's scary what Cambridge Analytica did and to what extent. I understood what happened, but this book gave me another inside in psychological manipulation of people with certain dispositions and how useful data can be at that. It's not just about 2016 US elections and Brexit; it's about the uncontrollable power data sets like this have. Not to mention that with real-world data they were running simulations to how a group, nation, the world would react to a specific change, advertisement, message.
It's a fantastic book, and if you liked Permanent Record by Edward Snowden, this is a must-read!