WHY DON'T WE HAVE ANSWERS TO THESE 9/11 QUESTIONS?By WILLIAM BUNCH bunchw@phillynews.com Firefighter looks out window at Ground Zero. Photo, Jim MacMillan, Daily News NO EVENT IN recent history has been written about, talked about, or watched and rewatched as much as the terrorist attacks of Sept. 11, 2001 - two years ago today.Not only was it the deadliest terrorist strike inside America, but the hijackings and attacks on New York City's World Trade Center and the Pentagon in Washington were also a seminal event for an information-soaked media age of Internet access and 24- hour news.So,...