Yeah, I get that. But would that have been too quick for anyone to type a quick text message? There would have been at least a few minutes of panic, between realising something was wrong, and everyone being dead, surely?
I'm puzzled about all the mobile phones (apologies if this has already been covered). Sure, the passengers probably wouldn't have been near enough to a phone mast to make a call (it's difficult enough in the middle of some English cities), but anyone that realised something was up could have...