First not looking for evidence about 9/11 truth or not.
Just the "If". If 9/11 really was a conspiracy what really could have happened? And most important why? Bush agenda? Secret shadow government? Muslim conspiracy? Chinese? What are your theory's?
Suppose 9/11 really did happen where 4 planes were targeted by muslim terrorist. Only we knew they were there. In fact we secretly condoned the act. Why?
Oil. Yes oil and the inluence it provides. The government knows that eventually oil will peak or run out, and entire global economys will either crumble, or rapidly adapt. To ensure the future of US power worldside we needed to control the major locations of oil left in the world. Hence our friends the Saud's.
The Sauds too know oil will run out, so like their Arab Emerite neighboors they are trying to convert from a oil dependent country to one being the center of the muslim buisness world. This requires money. And where else to get money? Invest in the US, specifically defence industry's. So prior the 9/11 they do invest, and agree to assist and provide targets and opportunity for terrorists using insiders within the terrorists own networks.
Back in the US with the cold war over there is talk of why the need for a world military presence? So the powers that be decide to act. They plan with the Saud's, ensuring the US is targeted. The ultimate goal is oil. In the post 9/11 world they know they can use terrorism and fears of WMD as ammo to invade the middle east countries who are not US friendly. Afganastan is a sideline, a way to deal with the terrorists to hide any evidence of US involvment, Iraq, followed by Iran is the true objective. Topple Iraq, establish a peaceful pro US government, then us alleged attacks by Iran to invade and do the same.
However Iraw doesn't turn out as easy as they thought. Yet their efforts are succesful in directing any media attention away from invasion reasoning. Meanwhile they plan ways continue their conquest.
Why? Well for one its not Bush. He's only the public figurehead. The real government is a group of men who don't even have political power. Instead what they have is money, the money to bend washington to serve them. The president and senators who serve them don't really care about being puppets. They only care to enjoy their power while putting forth the agena of their masters.
These men are not evil, nor are they god fearing men. They are logical and calculating. They care not for US lives but for the good of the nation as a whole in its survival as a world power. They know the future is uncertain. They know most importantly that in order for the US to not only survive, but to surpass its Chinese and European rivals it must secure the world resources for itself. These men think for the future, they consider themselves likely modern day founding fathers. As long as terrorism exists as a threat they can justify the massive military they would need to one day enforce US control over the remaining world resources.
Yes a shadow government, willingly spending american lives to provide a reason behind their agenda. Indivudual lives matter not, because in their view the only thing that matters is protecting American power.