Rootless and footloose, a man in space can't help but dream of coming home. But something nobody should do is bet on the validity of a homesick dream! Flight Officer Robert Craig surrendered the tube containing his service record tapes and stood waiting while the bored process clerk examined the seal. "Your clearance," said the clerk. Craig handed him a battered punch card and watched the man insert it in the reproducer. He felt anxiety as the much-handled card refused for a time to match the in