Paul Grayson walked the city street slowly. He was sauntering towards the spaceport, but he was in no hurry. He had allowed himself plenty of time to breathe the fresh spring air, to listen to the myriad of sounds made by his fellow men, and to revel in the grand freedom that being out in the open gave him. Soon enough he would be breathing canned air, pungent with the odor of compressor oil and the tang of the greenery used to replenish the oxygen, unable to walk freely more than a few dozen steps, and unable to see what lies beyond his viewports. Then days in a building filled to the dome with power equipment and radio gear; timing mechanism and recorders; and a refrigerator set-up that struggled with the awesome heat poured into Proxima I by its close-by luminary but which succeeded only in lowering the temperature to the point where the potting compound in the transformers did not run out, where the calibrating resistors would not change their values, where the recording machines would still make a record.And then again more days in the ship before it returned to earth. Call it thirty days and understand why Paul Grayson sauntered along killing time in the fresh air before taking off…