Very disappointing
Read for a book group after one of us had been impressed by an interview of author. Can see why an interview was appealing but book offered much less than it promised.
The author spends a lot of time training security personnel and so overall recommended an extremely high degree of vigilence -- much more than I think is desirable in most circumstances. Also, to flesh the book out, there was a lot that had little to do with visual intelligence and, being outside of author's expertise, was not great. I would have preferred more on visual intelligence and less on other topics.
It did not change my life, or even how I see things.