(en anglais) Jourdain, who is based in Northern California, does independent research on artificial intelligence and is a musician. He is also a splendid, imaginative writer whose prose, lucid and beautifully succinct, has all the liveliness of a Mozart allegro. That's not easy, considering the task he has set himself in this book: to give intelligent, easy-to-grasp explanations of how very complex things work and happen.