if we're talking about the murder of thousands of innocent people, investigating about this thing matters all the more.. just because it's not likely, doesn't mean it's impossible.. 'proofs are lacking on both sides' isn't conclusive to rule out that possibility..

saw an interesting documentary about this 9/11 stuff from zeitgeist: 4 videos in youtube. http://www.youtube.com/watch?v=7_E4N5YIycI http://www.youtube.com/watch?v=ECMJ2LBK90Q&feature=relat... http://www.youtube.com/watch?v=OSW1x_h4Kfo&feature=relat... http://www.youtube.com/watch?v=UeSDOb7NcgE&feature=relat...