one worldview for another. In many cases, the actual change is triggered by a significant event, often a crisis of some kind. But in other instances, an event or piece of new information led them to think in terms of a conceptual scheme that was totally different for them. Quite unexpectedly, these people saw things they had overlooked before, or they suddenly saw matters fit together in a pattern that brought meaning where none had been discernible before. People change their minds on important