Dozens of new schools of physics have sprung up in Saint Olga’s wake, ever more bizarre and more elegant heresies, each one hoping to shoulder its way to the inside track. One by one, they all fall down. In the whispering quiet of Heaven’s nights, you imagine you can hear the paradigms shatter, shards of theory tinkling into brilliant dust as the lifework of some corporate think tank is reduced to the tersest historical footnote, and all in the time it takes your damaged traveler to mutter some fragment in the dark. Not . . . Flies in an airport, hitching rides. Flies are advised to ask too many questions; flies are advised not to try for the Big Picture. Repeated attempts in that direction invariably lead to the slow, relentless flowering of paranoia, your mind projecting huge, dark patterns on the walls of night, patterns that have a way of solidifying, becoming madness, becoming religion. Smart flies stick with Black Box theory; Black Box is the sanctioned metaphor, the Highway remaining x in every sane equation. We aren’t supposed to worry about what the Highway is, or who put it there. Instead, we concentrate on what we put into the Box and what we get back out of it. There are things we send down the Highway (a woman named Olga, her ship, so many more who’ve followed) and things that come to us (a madwoman, a seashell, artifacts, fragments of alien technologies). The Black Box theorists assure us that our primary concern is to optimize this exchange. We’re out here to see that our species gets its money’s worth. Still, certain things become increasingly evident; one of them is that we aren’t the only flies who’ve found their way into an airport. We’ve collected artifacts from at least half a dozen wildly divergent cultures. "More hicks," Charmian calls them. We’re like pack rats in the hold of a freighter, trading little pretties with rats from other ports. Dreaming of the bright lights, the big city.