The introduction of a paradigm shift as a concept comes from Thomas Kuhn's work as presented in The Structure of Scientific Revolution. Unfortunately, the word paradigm is used far too loosely in conversations regarding changing the way we understand and do things. This use diminishes the gravity of what is potentially occuring, and this use skews the expectations surrounding the process of its acceptance within its constituency. Kuhn's breakthrough concept was to identify the fundamental nature of scientific progress, and the inevitable resistance of the affected community to the shift in thinking. In fact he observed that very frequently the insight that propels the shift comes from outside the discipline as it is currently comprised, and frequently from cross fertilization from a different field. It is much more than a better or deeper understanding. It is in fact a different understanding.