It was asking and then seeking out the answer to questions like:

"I want to know how the perpetrators were able to do this without being noticed in the first place?"

...that is what turned this argument for me. Every time I'd come up with a question like this and look for the answer, I'd find it staring me in the face.

*****
A heightened WTC security alert was lifted on 9/6/2001...

"The World Trade Center was destroyed just days after a heightened security alert was lifted at the landmark 110-story towers, security personnel said yesterday [September 11]. Daria Coard, 37, a guard at Tower One, said the security detail had been working 12-hour shifts for the past two weeks because of numerous phone threats. But on Thursday [September 6], bomb-sniffing dogs were abruptly removed."

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...there was a power down in WTC 2 the weekend before 9/11...

On the weekend of 9/8, 9/9 there was a 'power down' condition in WTC tower 2, the south tower. This power down condition meant there was no electrical supply for approx 36 hrs from floor 50 up... "Of course without power there were no security cameras, no security locks on doors and many, many 'engineers' coming in and out of the tower."

*****
.....ask yourself the following question: "Why is it that when I question the official story all I can come up with is more questions, and when I question the 'conspiracy theory' I consistently find CORROBORATING EVIDENCE?" To do this of course you have to actually question the official story, something which most people just don't have the stomach for.