Re: Ironic
To properly analyse someone's communications would take almost the same amount of time as having a policeman sit on their doorstep, otherwise you're just relying on algorithms to decide if someone is is a suspect or not.
And all it takes to defeat this surveillance is for the terrorists to make their plans face to face, rather than via text message.
You've basically fallen into the same mindset as the NSA and GCHQ, that data will give you the answers if you can get enough. Unfortunately their success rate argues against this direction.