The truthers have a lot of holes, but here's one question the official story can't answer: Why did the towers fall simulatneously at free-fall speed? Sometimes perfect cooincidences simply occur, but, as a skeptic, you have to admit that two sky-scrapers have NEVER collapsed at the same moment leaving barely any structural steel intact in any document, video, or otherwise recorded incident previous to 9/11. It's simply too perfect for there not to be something beyond what we understand.