Very good approach but the quality of writing was uneven.

The book covers civilisation existential risks with a framework for identifying “Cassandras” or people that foresee big disasters before they occur.

I found the book extremely useful, if even I wish the rating system they suggest was taken apart a bit more for clarity and verification. ( )

3.5 stars - it is very interesting except for those parts that really aren't. Non-fiction by a pair of very experienced national security people explicating how a small proportion of humans can predict where and how catastrophes will occur. A few examples are fascinating, astonishing really, such as the NASA engineer who predicted the destruction of a US multi-stage rocket upon liftoff, killing 7 people aboard, and the scientist who predicted a huge tsunami that would destroy an atomic power plant. It is well worth reading. ( )