To my untutored eye, the pieces of the plane that have been retrieved seem to be in remarkably good condition, and also remarkably large. Having looked at photos from crash sites (on the ground) over the years, I often get the impression of the plane being shattered into tiny pieces. If my impression is at all accurate, this fragmentation is presumably due to a violent collision with the ground? The ocean is no less hard when you hit it, so does this tell us anything about the impact made by AF447?