It is hard to get into this long story: it presents a heroine without much originality "," Marilyn Monroe beauty and the brain of Einstein ": seductive and intellectual, she would hide a secret experiencing: a somewhat banal material input . But after this initial recoil, one finds herself captivated by the plot: physicists decided to study the tedious string theory, and the possibility it contains can generate images of the past. The novel remains marked by an interesting mysticism, one of the first temptation is to see an image of Christ, see "Him", as it is often written. The second temptation is that of power and recognition: what limits, what reservations keep when everything becomes possible? Creates a malaise, a side effect, called "Impact" is aroused by the contemplation of forbidden images of the past ... It is ultimately the question of limits is discussed, where can we and should we stop in knowledge and power? When things are accessible could refrain? And you find yourself not being able to let go of this novel. If the style is not scoring, the story is creative and well done, the plot does she not let a moment of respite.