the mitsubishi pedion, released in 1998, was the thinnest "rectangular" laptop at 0.72 inches (1.84 cm) until the release of the dell adamo in march 2009, which is a rectangular laptop 0.65 inches (1.65 cm) thick. although both these laptops are thinner than macbook air's thickest point (0.76 inches/1.94 cm), macbook air "tapers" from 0.16–0.76 inches (0.4–1.94 cm), leading to some controversy over the "thinnest" laptop.