Easy to blame the net

Following the weekend's horrific events in Bali, another bomb blast that killed seven people and injured 80 others in Finland the day before has received less attention than it would normally. But today Reuters reports that police are examining the theory that the only suspect - killed in the blast - used a recipe he found on the internet to build the device. Evidence cited so far includes the fact he was shy, lived at home with his parents, and "spent a lot of time hooked up to the Internet". He was also a chemistry student, but ignore this more likely source of bomb-making knowledge. Off-handly blaming the internet is lots easier than asking: what creates such a strong murderous, or suicidal, impulse in a 19-year-old he detonates a 6.6lb bomb in a shopping centre?