Often I grab books that look like that might be interesting but then decide they are not worth my time to read. This was one of those books. I, in fact, put it down shortly into it: the book is too far out of my league. I started reading another book but could not finish it quickly enough and so returned to 'The Light'. I am still not sure what three quarters of the things the book discusses even mean.
Wilczek dives into the evolution physics and quantum sciences over the last several years and he includes a roadmap for future developments.
Interesting tidbit: magnetic and electrical fields travel at the speed of light.