It is understandable to see how delicate grasping of an apple could be considered a more specific version of grasping a ball, especially considering the fragility of the fruit. However, this hierarchy of capability is not always as stable as it seems; it depends heavily on the application. For example, in agriculture robots, yes, the ability to grasp an apple without damaging it is a crucial specialization compared to a ball. But for an assembly robot in a factory, a ball might be closer to its actual needs, and the apple less relevant.