Laying them up and picking them down This phrase is appeared for the second time in the story: So, in the story the boys are still walking unable to stop... "I don't want to do it anymore," Olson said hollowly. "I'm sick of it." "Raring to rip," McVries said turning on him. "Isn't that what you said? Fuck it then. Why don't you just fall down and lie then?" "Leave him alone, let him do it his own way" Garraty said. Olson didn't say anything. He just kept picking them up and laying them down. What does it mean?