In chapter 3 “What’s Worth Preserving” We learn the difference between formal, experiential and activist critique. While Formal and experiential critiques describes, demonstrate and give you a tour, Activist critique argue, fight or defend  what they want; if a building should be torn down or if it should be saved.
We should preserve New York major structures, that are strong significant to the future. Architect will continue innovating, will be many discussion about to preserve or not buildings. In pursuance of Alois Riegl  there are five steps to decide if a building or structure should be preserve. Historical value, Artistic value, Age value, Use value, Newness value. These five will put you through the right track to decide if it should be preserve or not.
