Bernard: Well the party had an opinion poll done and it seemed all the voters are in favour of bringing back National Service.
Sir Humphrey:Well have another opinion poll done showing the voters are against bringing back National Service.
We all use polling but recently two issues stood out where we ought to be more careful in their use. The first is a false interpretation of what the data shows, the second is the flaws of using polling data on a complex issue to support your argument.
