Sheldon glared through the blinds in his breakfast nook, watching his neighbor, Greg, load brown paper refuse bags onto the curb.  Twice per year, the Lynchburg municipal public works performed bulk pick-up of garbage and brush.  Twice per year, Sheldon had to put up with Greg's pile of stinking lawn refuse bags out on the curb for a week.
     Greg dropped bag number seven on the curb and headed back into his house.  Sheldon let the blinds drop and grabbed his briefcase off the table and sprinted to the front door.  He had about two minutes, while Greg pulled on his shirt and tie, to get to his car and avoid a conversation.  
     After 34 bulk pickups, he knew the routine well.  Always seven bags stacked on Monday morning, another seven on Wednesday for Friday's pick-up.