This book is about sex. Our own sex. Sex is a problem: The problem to get more sex. In the stone age, people used to solve this problem using the easy way. If you were a man looking for an intercourse, you just had to "go hunting" (hunting a girl, of course ). The girl used to awake in your cave, just to notice she was officially married (with you). Nothing else was needed. Perhaps some inquisitive reader may be wondering about her feelings......