The underlying concept (or one of them), that human brains can only socially deal with a maximum of 150 other people is an interesting revelation, especially given the current arrangement of society today. However, the rest of the book was a lot less interesting. While many of the tips seemed ok (although, some veered into rants), some of her strategies just seemed a bit weird and needlessly confrontational (or in some cases, to be the opposite and far too forgiving).