Over the last couple of years, Chromebooks have quietly infiltrated the computer market. Google's affordable "just a browser" devices are the best-selling computers in schools, and they're percolating around boardrooms and cubicles. Last fall, more people bought Chromebooks than Macs-and that's not going to switch back anytime soon. Now Google's out to convince you, regular human, person of sound mind and reasonable budget, that you ought to buy a Chromebook.