The classic think-tank is supposed to be sitting in an attic thinking up grand ideas.

Social innovation thrives on collaboration; on doing things with others, rather than just to them or for them: hence the great interest in new ways of using the web to 'crowdsource' ideas, or the many experiments involving users in designing services.

Radicalism is as British as tea and cakes, as much a part of our make-up as monarchy and football. It will never have its own jubilees, palaces or honours system.

The end of life is likely to be an important focus for innovation. Most people die in hospitals, tied up with tubes and with their bodies pumped full of drugs. Yet most would rather die at home and with more control over the timing and manner of their death.

With a fractured sense of self, we come to depend on what people feed back to us - often mediated through social networks - not what we are. We have complex identities but may become less able to act as a subject - confident in what we really are.

Deeper fulfilment is rather different from the happiness of seeing a good film or watching your team win at football, and it doesn't come at the push of a button.