Yup, I read that a while back. The
link he gave to the debunking of the conspiracy theories was really interesting and I'd advise everyone to read it.
Here's what I still don't get: If the terrorists were planning on hitting the USA as hard as possible, why did they strike the towers at 8 in the morning instead of in the middle of the day when there would have been tens of thousands of people there? Also consider the good fortune that the one plane that didn't hit its target was the one aimed at possibly the most powerful symbol for the USA; Capital Hill. Seems like a positive coincidence to me.