Well, it takes quite awhile to determine the placement of explosives for that kind of thing. Let alone to gather them and place them amidst all of the rubble from the two towers.
Also, it does seem like poor judgement to rush to cause such explosions while searching for survivors. Especially a rush demolition job like that.
I’m certainly not saying that I buy the theory. But I am also not just going to buy the official story without keeping an open mind.
Mankind has demonstrated the capacity to destroy each other for personal gains throughout history. Historically, I don’t think that this would be the most shocking occurrence ever, if the theory were correct.