The world of computer chips just got a wake-up call. In a recent jam-packed tech keynote, Microsoft unveiled the next generation of its popular Surface Pro line of PCs. The unusual thing is, it did it twice: first revealing the Surface Pro 7, a capable iteration of its powerful-tablet-computer-with-slap-on-keyboard design, and then almost immediately showing it up with the Surface Pro X, a thinner, sleeker, pricer machine with a larger screen that boasts better battery life and much higher cool factor. The dual announcement was odd.