Do laptops need to keep getting thinner and lighter? Oh, hell yeah. True, we are starting to get to the point where they really can’t get any more svelte, but as engineers continue to show, they will keep working to push boundaries. For instance, today, Lenovo officially unveils an impossibly thin and light laptop that is sure to delight road warriors. Called “ThinkPad X1 Nano,” it weighs less than two pounds and is just 0.55 inches thick.