We live in a bewildering world of change, which splits naturally into steady progress punctuated by sudden disruptions - the two speed world. Steady progress ensures the survival of our species, but it is the disruptions that move us to a new level. Both types of change, slow and rapid, are important, because they mould and shape our lives, but because of their widely divergent characteristics it is sometimes difficult to recognise a major life-changer until it is too late. Even if we do spot the upheaval, we cannot deal with a change unless we understand it. Examining leading edge ideas and...