WTC 7 may be a small issue in and of itself, especially compared to WTC 1&2, the Pentagon and Pennsylvania, but it's still an unanswered question. As such it's one of many unanswered questions regarding 9/11 and is also symptomatic of the massive culture of inexplicable governmental secrecy and enormous pressure to find a scapegoat & go to war that immediately sprang up in response to it. Once you think about the "2+2=5" of WTC 7 you start noticing many other questions haven't been addressed sufficiently and before you know it, you're not sure who to believe - but you know you can't believe what's being pushed at you, whether you want to or not.