The spiral of learning?

I like creating photographs for their own sakes but they are very useful to communicate learning principles as they can remind students of concepts and ideas, i.e. they can act as memory triggers. The spiral, see image of a gourd tendril, can be used in support of the learning achieved through reflection and improving practice being a spiral rather than a circle which implies you end back where you started, not ideal if want to develop as a professional or student.