This book is really a devil's guide .This book is a weapon like NUC bom
and AI everyone must have access to , not to use but to diffend.
Don't be so positive about world .
I met some nastiest people in my life as friends and sales persons also even teachers who uses same techniques to things get done in their way.
This book is like most narcism in it.
But deep inside, you know this is what big shots do to secure their way.