Mossberg: HP aims at the Mac with super-slim laptop

Welcome to Mossberg, a weekly commentary and reviews column on The Verge andRecode by veteran tech journalist Walt Mossberg, now an Executive Editor at The Verge and Editor at Large of Recode.For years, Apple’s Macintosh computers, while far from the biggest sellers, have been riding high. They’ve managed to outperform a sinking Windows PC market in most quarters, even if modestly. Mac laptops are potent sellers in the lucrative over-$1,000 category. Macs are widely used in colleges