Why don’t we put warnings on smartphones?

On a recent trip to Sainsbury’s, I was perplexed to find nothing where it should be. I’m used to things being switched about to a small extent. It can even be quite fun to track down rice pudding where the clingfilm used to be and the clingfilm where the baked beans once were. But this was a dizzying change of topography, like returning home after a tsunami to find your bathroom in the basement and your sofa sailing off into the sea. All was made clear by a helpful sign: ‘LOOKING FOR YOUR FAVOURITES? The government is introducing new rules in October for products containing high fat, sugar or salt.