Or it could've crashed in a field somewhere like Flight 93.If the plane missed, it could have turned around and tried again?
Or, like what happens with flights on a regular basis, its takeoff could've been delayed for some mundane reason. All it would've taken is one person on the flight immediately before to flush something down the toilet that they shouldn't have and the "conspirators" would've been left with their pants down: they'd have had a building rigged with explosives being swarmed over by police and firefighters while their pretext for blowing it up sat on the apron in Newark while the mechanics tried to get the poop valve un-stuck.
It makes no sense whatsoever for anyone to create such an intricate plan involving demolition explosives AND airplanes if they absolutely CANNOT allow the true nature of their plot to be discovered.
Virtually every professional or scientific journal operates this way. If you've got access to a university library or computer lab, you may be able to look at it for free.Well only 7 authors were part of this particular paper, which is for sell. Honestly, I try not to take any consideration from someone selling anything, they are just exploiting a potential market, same holds true for conspiracy theories. Granted, I can only read the abstract of the paper, so I can't really comment too much on it.
It's the oldest and one of the largest professional engineering societies in the United States. They have 147,000 members - the majority of civil engineers in the country belong to ASCE.Don't know anything ASCE.
They generally try to govern and promote the profession of civil engineering in the USA (and to a certain extent, abroad). They operate committees that advise government on engineering matters, they create standards and guidelines for various aspects of civil engineering that are adopted and referenced by various building codes and standard construction contract specifications, they engage in and fund research into development of new technology, and they publish professional journals and hold conferences to enable knowledge-sharing between civil engineers.
Basically, the ASCE is a highly respected organization focused specifically on civil engineering (including structural engineering) that is known for its technical expertise and promotion of professional ethics.