The culture of the fabers was so much more geared to face-to-face interaction than that of lunar footsloggers, let alone the thoroughly privatized societies of Earth, that it was a rare faber who would not “drop in” if he happened to be passing the residence of a friend he had not seen for a month or more. When he returned to the moon briefly from the microworld in the asteroid belt that was now his home, Mirafzal automatically came along in person to find out how I was getting along. His own news was, inevitably, rather more interesting than mine. Mirafzal explained to me that the microworld on which he lived was being fitted with an antimatter drive that would take it out of the system and into the infinite. Its prospective voyagers were going to great pains to make sure that it was properly equipped for its departure and Mirafzal was one of those charged with the duty of keeping close track of technical progress in the inner system to make sure that no opportunity went unseized.