1. Language cultivation
When a group of people successfully adopt a set of complementary metaphors through which to configure their relationships they are effectively cultivating a new language. This language may not be readily understandable to others -- or may create a false impression of being understandable. Selecting and cultivating metaphors bears a similarity to gardening in the attention that is called for and in the variety of gardens that may be so created. The garden may indeed be a "secret garden".