This is really too silly to take serious. It's like all other conspiracies. No matter how much evidence is presented, you will not believe it. It's like the Birther movement. Obama cannot possibly prove he is a citizen because the conspiracy theororists constantly move the goal posts. Experts from various fields have given expert testimony addressing all, or nearly all of the questions from the conspiracy fringe and yet they persist. It's as though they insist on someone answering their questions and when someone does they just refuse to listen.
Building 7 is a good example. To a lay person it would seem not to make much sense why that building would fall. They insist it be addressed. It's addressed by numerous experts and engineers all of whom mention the design anomaly of that particular building that could lead to it collapsing. In addition, the conspiracy is largely based on a cherry picking of evidence. Take again the example of building 7. They say that there was no damage done to the building prior to collapse. This is not true. If you look at the building from only a couple of select angles it would appear that way, but when you see all the photographic evidence it's clear that there was a significant amount of damage to various parts of the building. In addition, there was a fire burning inside for a long time and not long before the collapse, you can see the exterior of the building swelling and distorting under the stress of all the damage.
All the pics and counter evidence is out there and yet the conspiracy is based on old, already refuted claims.
Not only is there no evidence for the claim of the government taking down the buildings, but there is one glaringly obvious problem with their claim of conspiracy: How does one keep secret the massive undertaking that would be required to accomplish such a task?
Something this big would have to be orchestrated by hundreds, if not thousands of people. They all have to keep up the same lie with no discrepancy....this seems unlikely.
Not only that, but with Bin Laden being a sworn enemy of the US, why would he take full credit and responsibility for the attack? Would it not be more beneficial to his cause to have the US citizens think the US did it? Surely the internal conflict this would create would be huge. It's for this reason that Osama Bin Laden is dead. If it was just another conspiracy, would he not make the US look foolish by all of a sudden appearing on TV?