nergy is not added to keep them ordered. Friendships and families and economies all fall apart unless we constantly make an effort to keep them working and well oiled . And far too few people, it seems to me, are willing to contribute consistently to those efforts.Р Of course, the plex things are, the harder it is. If there were only a dozen or so air molecules in my kitchen, it would be likely—if I waited a year or so—that at some point the six coldest ones would congregate inside the freezer. But the more factors in the equation—the more players in the game—the less likely it is that their paths will coincide in an orderly way. The more pieces in the puzzle, the harder it is to put back together once order is disturbed. Р“Irreversibility,” said a physicist, “is the price we pay plexity.”