Thispart of the book is included in the introductory section, so you can still change your mind to buy the book. I have a few books that are available for free, but a person who doesn't want to read won't read them anyway. Therefore, I rejected this idea inthe future. In addition, what is received for free is not appreciated and, rather, will be read less carefully, so all the effect of the magic of books disappears.
People should eventually share their knowledge, and that's what I do. The way a person differs fromthe ruminants is that they can pass on their experience to the previous generation.
From this point of view, this book is more intended for young people, but if older people read it, I will only be happy. They will be able to compare their thoughts and experiences with another person.