Bold book, very well written and explicit, even for the novice that I am in the matière.On quickly became interested in the issue and we discover with enthusiasm the logic of reasoning made to the Treaty is interesting sujet.Il sapercevoir of how today's man could interpret old frescoes 30,000 years BC. With explanations and conclusions established based on our acquired knowledge, we are, for centuries, missed out on the most obvious, the simplest method soit.Un breeze! BRAVO.