There's a little note saying that the list may not be complete. If you click that, they pop up an explanation, one of the bullet points in which says this: > W

There's a little note saying that the list may not be complete. If you click that, they pop up an explanation, one of the bullet points in which says this: > We receive more details and activity than what appears here. For technical and accuracy reasons, this list doesn't show all of the activity that we've received. Activity that is not shown includes information that we've received when you're not logged in to Facebook, or when we can't confirm that you've previously used Facebook on that device. It also includes details such as the item that you added to your shopping basket. It seems to me that this gives them carte blanche to omit anything they feel like omitting.