Something like a primer for the major "shift" that is allegedly to come some time in the future.
Slater holds that for the last couple millenia or so, human societies have been dominated by a Control Culture, which requires dominance over women, wages wars, splits the world into "myself" and "others" and thus holds a sort of binary worldview. For some reason (Slater does not elaborate why) the Control Culture is being replaced by an Integrative Culture, which values holism, peace, equality, democratic values.
The metaphor he uses to illustrate this is (like Barbara Marx Hubbard's Conscious Evolution) the metamorphosis of a butterfly. As a caterpillar starts to liquify itself in its cocoon, its body activates imaginal cells to carry through the evolution to a butterfly smoothly. However the caterpillar body sees these imaginal cells as invasive and tries to fight them off. In our society, the imaginal cells started really appearing in the 1960s with the fights for civil rights, anti-war, etc. and what we are seeing today is the fighting of the old caterpillar body that sees the transformation as something foreign and dangerous. Of course the end result is a beautiful butterfly, and so Slater's book is hopeful that this is a natural process that will at some point culminate in a peaceful society.
The book is full of excellent ideas.
His chapter on sexism is particularly insightful. Hew introduced the idea to me that part of the reason men have been doing so poorly in school over the last couple decades is that since females have been given more opportunities to excel in education, administration, etc., rather than openly share dominance in these realms, men find other realms of dominance. And one of these realms is stupidity! So doing well in school is seen as feminine. This explains the worship of the Jackass movies and the disdain that many boys and men have today of education.
His chapter on power/nonduality is also interesting. Because Control Culture has a binary worldview, it is obsessed with eradicating the negative pole. But such eradication has a detrimental overall effect. Integrative Culture recognizes the value in preserving contrary opinion.
As I said above, this book is a sort of primer on these major issues. Slater does not go into the how and why of cultural evolution, but outlines some of the key areas that will see transformation. I would have liked to have read his speculation on why it's all taking place (why is it inevitable?). Some of the chapters are a bit brief and sketched out, but the book is clearly written and quite understandable.