Creative Speculation

let's close that by saying most reasonable people would find it highly improbable. So where does that leave us?

I see possibilities:

A) At least one signal was activated, it sent, but was not received
B) At least one signal was activated, but it did not send
C) No signal was activated for reasons other than the great box cutter battles


Possibility A would seem highly improbable - how do you prevent someone from receiving a signal?.

Possibility C: it's relevant that the tapes of flt 93 indicate the pilots were alive outside of the cockpit so they weren't immediately killed, preventing them from squawking the signal. There was also a report of something like mace from one of the planes. A mace attack is bad but ex-military would have been in NBC chambers every couple of years and they make you take your mask off shortly while during that training so having stinging s**t in your face is not immediately incapacitating for a 2-3 second reaction. I still don't see anything preventing them sending a signal.

Possibility B: Relevant here is the fact that there were at least three false electronic hijacking signals that morning from other aircraft that have never been explained. So, we have aircraft falsely sending signals and the real hijacks are not sending any signal. I conclude that something prevented the signal from transmission. There was a ghost in the machine before the hijackers got their hands on the pilots (to whatever extent they did). It would seem to me that someone screwed with the plane's software. That sabotage software is feasible we have seen in the news. A customized virus will do the trick. Someone helped the hijackers.