It is common courtesy to ping the person you are talking about. I don't know what her complete theory is. We already know that there were government failures.
Anyone who thinks al Qaeda is incapable of pulling off something like 9-11 without the help of the US government is not cognizant of the Islamist threat.
A matter of disagreement. We know that the people who kept our borders vulnerable have their agenda.
I could care less about courtesty to truthers. They only get contempt from me.