Sorting olives

I wish I knew more about the olive-sorting process. Perhaps the dried-out ones drift away? Or is she just rearranging the bowl’s contents so she can do a visual inspection once things have settled? “A Palestinian woman sorts olives during the harvest in a grove next to Israel’s separation barrier near the West Bank village of Abu Dis, on the outskirts of Jerusalem,” by Ashraf Abu Turk (AP), The Big Picture, 15 October 2008