The Blue Marble is shrinking; as Orion II lifts off, ripping from the grasping tentacles of Earth’s gravity, the world gets smaller, smaller, a blot on the cosmic sheet of infinite blackness, which closes in like a camera iris in a classic film’s final shot. Picture the planet’s surface, where the wonders of the old world buckle at the top of the hour under the weight of new wars; where down below, all those little people fall to their knees, desperate voices crying, crying out to their deity-du-jour for deliverance.

“In old times, popping ’sphere was much more serious.” Reinventing her bedside manner, Nerethe had found, was the hardest thing about pretending that she no longer had any mental abilities. Harder even than wielding hand-held med instruments instead of reworking the flesh with her mind. “When we were planetbound, we didn’t hibernate under any circumstances. We were spacers for over a thousand generations before we developed a survival mechanism.”

Gorman was on foot, crossing a frozen continent. It was not Antarctica. That was light years away, and so over. Nobody went there anymore. This continent he had chosen for his latest adventure was bigger, broader, colder, deadlier, nastier. It was not fun. Every step was an occasion for regret. He was probably going to die. He was glad he came.

Welcome to this last stage of the exhibit. You’ve been a very attentive group and I’ve enjoyed our time together. If you wish to use the restroom, it’s down this hall on the left; if you’re using the ladies’ room, they’ve asked us to remind you to knock before you open the stall door as some of the locks in there are faulty. Are we all back now? Good. This is the final piece we will discuss today. Take a long look.

Nora is a serial becomer. She has become many things in her life, though rarely on purpose. The first time, it just sort of happened. The second time, it was a coincidence. Now, it is a habit she cannot seem to break. In the past, she has become a rock climber and a scuba diver, a beekeeper and a gardener and a mechanic specializing in European cars. For two months last summer, she was a stand-up comedian. Her senior year of college, she amassed New England’s largest collection of antique coins.

There was a postman whose father was a postman and his father a postman before him. Like them, the postman wore a blue-gray uniform with a stripe down the pants leg and, like them, he delivered mail on six days out of the week, resting on Sunday as was the tradition. Times change and traditions change, and many of the postman’s brethren took to wearing running shoes. Some even wore spikes so as not to slip on the icy winter sidewalks.