This unique book as a great deal of information about the development of stone tools. An important focus is on the most simple form of tool making- breaking rocks. It explores the development of tools, how they were made and their many uses. It progresses into finer stone tools, but it is singular in its information on early, simple tool development and use. The skills can be the most practical in emergency or fast moving situations. As the full name implies: The Universal Tool Kit: Out of Africa to Native California… these skills were and can be used world-wide.