A couple of weeks ago, Apple introduced the world to the iPad Air, but during the same event, the new 2013 MacBook Pro lineup was also revealed, going on sale that same afternoon. These new MacBook Pros would ship with OS X 10.9 Mavericks, the new desktop operating system that was also released that same day, completely free of charge. The 2013 MacBook Pro line sees some significant updates--things like a thinner body, Retina display, PCIe storage, and Haswell processors. So, how do all these changes come together at the end of the day, and is the end result enough for you to give it your attention? Does a thinner, lighter, cheaper, and more powerful package add up to more than the sum of its parts? We answer all this and more in our 13-inch MacBook Pro (late 2013) review.