It is tradition to look back on the year at the end of December, to take stock of where we were, and where we are now. In part, this is an attempt to put what seems like a volatile and ever-changing world into some sort of order, to search for patterns, to make sense of the past. But the main reason isn't to indulge in backcasting -- it is to look into the future, to see how the trends and events of the past 12 months fit into broader temporal patterns, and how these may give us insight into the flow of future history. ...