It is Monday night, and I am walking down 47 th street heading for the R train after another great day at the office. Broadway is an undulating mass of pedestrians and I can’t figure out why. It’s Monday, not matinee Wednesday. Then I look in Sbarro ’s and see a line of people stretching out the door and it hits me. The New Year’s tourist army has already arrived. Yes, there they were lining up for their authentic New York pizza experience at a chain joint in Times Square. Well, I suppose one person’s authentic is another person’s fraud, and in any event the pizza at that Sbarro ’s is still probably better than the local Papa John’s or Domino’s that they order from back home. Location lends a bit of credibility too; why I remember rushing to visit the Howard Johnson’s that was right across Times Square from that very Sbarro ’s when word came that it was closing. HoJos . The very symbol of the generification (and yes, I mean " generification ", not "gentrification"...