Note: I discuss C.J. Cherryh's Foreigner below. No real plot spoilers, but if you're planning to read it and want to go in completely fresh, bookmark this for after.There's a Google I/O every year. Developers line up for keynotes, product announcements, the whole ritual. I/O -- input and output -- is the founding concept of computer science, the basic grammar of how information enters and leaves a system. There are also IO towers on reservoirs. Physical structures. Pipes and valves that manag...