Confusing Movies with Reality

Just found a wonderful article about the question if it is feasable to use stable, liquid precursors to produce a bomb inside an aircraft. Read this to get an idea of how DIFFICULT it would be, and then tell me why the British have gone so crazy on this.

The answer: they are confusing movies (where stuff like this happens, heck, pretty much anything can be done on celluoid/digital any more) with real life.

And how can we really be sure that this is not just the Pakistani government getting rid of a bunch of uncomfortable critics? Just call them terrorists, and bang, they get put in prison for a while (years?) until someone figures out what the threat actually was.