My little aside is -—
I fail to see what the the big deal is with aluminum body laptops. I prefer plastic. If you are a geologist out in the field you should want a rough tough aluminum body laptop. But for most users I just don’t get it. Like these New Yorkers and other urbanites don’t need aluminum body laptop. It’s like all these people with 4 wheel drive vehicles who have real need for the 4WD once every two years
So Apple is making sure it has use of hundreds of CNC machines to hone these aluminum bodies? You would think it was the Holy Grail or the Second Coming of Christ. More Apple anal obsessiveness in the great tradition of Steve Jobs.
Thin, light, strong, solid (quality) feel. Much better than Apple's previous laptops, including the titanium ones, and anyone else's. It also simplifies construction and design, as there is no longer frame + contents + body, just contents and body.