Pioneers have always resented their wanderlust, hated their hardships. But the future brings a new grudge—when pioneers stay put and scholars do the exploring! The very young man sat on the edge of the sofa and looked nervous. He carefully studied his fingernails and ran his hands through his hair and picked imaginary lint off the upholstery. "I have a chance to go with the first research expedition to Venus," he said. The older man studied the very young man thoughtfully and then leaned over to