But why put in the effort if it's doing Gordon little good? Perhaps the Tories are worried about it after all? I rather think that they've come to see it as an annoyance; something that - however ineffective and disingenous it may be - is lingering like a bad smell. With Brown repeating it every opportunity he gets, there's always a reason for interviewers to mention it whenever they get a Tory behind the microphone - just as John Humphrys did this morning. Having a stock response could well nip that in the bud. And, what's more, it could encourage some more destabiling chat about whether Brown should change tack.