One way to look at our modern world is as a gigantic collection of problems. Many of these problems might be personal and very well defined (e.g. how do I get to the office on time today?) while others are much higher complexity (e.g. those associated with geopolitical or ecological issues.) A view of the world as full of problems is not a pessimistic view in any form but, instead, one that highlights the action-oriented and dynamic nature of our natural and man-made worlds.