Recently, I happened to stumble across a list of Product Warnings. Most were familiar, not to say apocryphal, such as the warning on a chain-saw ‘Do not attempt to stop blades with fingers’ or the one on a microwave, ‘Do not use this microwave to dry off family pets’. One warning was new to me. This was said to be on the label of a Superman outfit sold by a wellknown UK supermarket and read ‘This garment does not enable the wearer to fly’.