Brian Drayton looks at the effects of syncretism, dilution, and cultural appropriation on the Quaker movement.
At first blush, such a process might be celebrated as a process of enrichment: Quakerism version 1 turns into Quakerism v2, now new and better because it has bells or outward sacraments or what-have-you. But note that this kind of change is not just a matter of simple addition, because elements drawn from various other traditions are themselves embedded deeply in some culture, and so they are clothed round with meanings and nuances that are implicitly adopted along with the idea or practice that has been explicitly imported.