It’s hard to turn on the television nowadays without being shown a robot. It might be looking like a grasshopper doing something terribly important, such as helping a surgeon with an operation, or just be a cute little metal humanoid designed to make schoolchildren more interested in their studies. One robot I saw on TV the other day was disguised as a cuddly white seal pup that was feigning pleasure at being stroked on a woman’s lap in an old people’s home.