Ivy had been replaced, something like eight months ago, by Markus Leuker, the Swiss fighter pilot, mountain climber, and astronaut. Or, to put it more precisely, a new position had been created that made Ivy’s post redundant. Izzy was no longer just Izzy; it was the combination of the Cloud Ark fleet plus the vastly enlarged complex that Izzy had turned into. As such, a new leadership structure was required. The person at the top of that structure would shortly become the most powerful leader in human history, in the sense that 100 percent of all people alive would be under his or her authority. It was an altogether different job from being the first among the twelve equals who had been manning the International Space Station of two years ago.