To help you get the most out of your mac!
The MacBook Pro with Retina display has a pixel density that is so high, your eyes can’t discern individual pixels at a normal viewing distance. The Retina display packs four times the pixels of the standard 15-inch MacBook Pro display, giving content incredible detail and dramatically improving the viewing experience. See the frequently asked questions below to learn more about using your MacBook Pro with Retina display.
The outside of the box said "Windows base machine or better", so I bought a Mac.