Claiming that grasping a apple is a simple specialization of grasping a ball is to ignore the inherent complexity of manipulating natural objects. If we looked at this with fresh eyes, without the mental investment of a linear progression, we would see that a ball, even red, is predictable. An apple, like those bought at Souk Lahad, has texture variations and shapes that no robot programmed for a ball would handle without difficulty. This requires more sophisticated sensors and a logic that goes far beyond a simple algorithm adaptation.