Yes, but the Conspiracy theory re' 9/11 is founded on huge discrepancies in the evidence: such as the missing plane that was supposed to have crashed into the Pentagon!!
As long as you weigh the evidence then you will discover that there are huge flaws with the official explanations as to what happened and why it happened.
Demolition experts have also stated that the 3rd tower, that collapsed nearby the WTC could have only done so by explosives, as it imploded vertically.
It is anomalies such as these that give rise to Conspiracy theories and with good reason.