Jaakko Lisalo has a lot to answer for. A Finnish cyber designer, it was he who conceived a game featuring grumpy-looking birds with no visible legs or wings.
Developed by Rovio, Angry Birds has now spread with the ferocity of bubonic plague through mobile devices.
My seven-year-old son is totally enslaved by the pastime. Any attempt to converse intelligently on anything else is futile. His teachers have forbidden him from even mentioning the subject because he's corrupting fellow pupils with the fanaticism of a prophet, persuading them that obliterating small pigs is more rewarding than following a tedious educational curriculum.
At every opportunity, he "borrows" the caregiver's mobile phone to play until he has exhausted the battery.
Changing mobile codes or erasing the program is futile because he cracks codes and reloads the stuff with the speed and efficiency of some sort of android supercomputer.