Hello everyone, It's been a long time since I had read a technical book not asleep or children, there one has experience, research, logic and a very good analysis of the whole. Fortunately, all is not perfect, otherwise I would have nothing to say ...... but I invite you to really get you if biensur you can consider that our crisis will not end with a cost of bagette magic ... This book is the logic and common sense ... Unfortunately Really !! PACHA