Apple's claim to have the world's thinnest notebook in the form of the MacBook Air may not account for a 10-year-old notebook, says a claim from CNET. Although as thin at every point, the 1998-era Mitsubishi Pedion maintained a uniform thickness of 0.72 inches when closed, just slighly thinner than the new MacBook's 0.76-inch figure at its thickes