The Australian reports breathlessly that Lindsay Tanner can’t guarantee that no working families will be worse off, nor that interest rates won’t rise in the future.   Nor can Malcolm Turnbull, or Kevin Rudd or anyone else.  Or to put it more fully, they can’t but if they did they’d be lying or stupid.  So where’s the story?

I guess in raising the luxury car tax no one can guarantee that there will be fewer accidents on the road, or more accidents on the road.

Can we do any better than this?