It appears that the plastic bezel is the structural component between the glass and the back. Given that the aluminum doesn't appear to come in contact in any way with the display, how does that constitute "all-aluminum unibody" construction? It seems to me that the "body" is composed of two distinct components: the aluminum back (stamped?) and the plastic bezel. Or is the bezel not considered part of the body, and therefore structurally insignificant? Or just not part of the body?