That’s why Iain Duncan Smith has taken such care to make it clear that his primary motivation in reforming the system is not to save the Government money or make the system fairer to the taxpayers who pay for it (important though these things are), but to help those whom the last Government trapped on welfare. And people agree that net migration should be reduced, but if are perceived to just talk about that and have nothing to say about our National Health Service, rising energy bills or the cost of childcare...well we found out in 2005 where that will get us.