This is really an urgent needed book of this time. While we are bombarded with rumors of extinction risks daily, it was essential that someone provides us with fact checked evidence that actually how much is the risk at numbers. Well, Toby just did the work, the most compelling thing about this book is that it has ranked the risks in statistical numbers, instead of just theorizing how something is dangerous its much more easier to understand with numbers and statistics. It also shows how and why we should care about the existential risks. A great read anyways