Philip K Dick is recognised as a master of SF. However, I can never come to an understanding with any of his works. I believe that his books and stories make much better films (take Minority Report, Blade Runner, Total Recall...) than literature. This, for me, is a high praise, but this is a book!
In this novel, the "new men", mutated strains of men - the superbly talented and the "unusual" (precogs and telepaths) - have seized power and normal humans are being socially left behind and excluded. There's a resistance movement going on, but obviously without a very bright future.
There are two paralel tales: a poor workman and his son, who are sucked into the greater conspiracies, and a Thors Provoni, a kind of Messiah and new man renegade who has gone to search for help from the planet Frolix 8, and for whom everybody awaits like Godot. When those chaps come and help the normals...
My problem is that I cannot understand the ultimate end of Dick's stories, full of misfits, mutants who don't get any clear advantages from their mutations, conspiracies... I dont' understand the end of the story, or what all this means - probably because the author wanted it to mean nothing at all.
All this makes a good material for a SF novel, but the author gets it muddled and after all you don't understand the ending.
That's why I'm giving 3 stars, not because it's a bad book, but because I don't think it works so well as a SF story.