Pretty clear except at the beginning

This book reads very well but the first part concerning the molecular biology looks to me to take too much space and are not sure where the author is coming from. Fortunately everything becomes clear afterwards. While recent advances in science make some (rare) a bit outdated passages and although I do not think you understand everything, it is a book that poses interesting questions and provides paths of original reflection. I would have also liked a little more development on the end, say that the first part of the conclusion deserved a full chapter. So that was good.