My friend Ben suggested that he and I each put one change of clothes in each others suitcases just in case we lost our luggage. I have traveled quite a bit and have never lost a suitcase before so I ridiculed Ben fairly unmercifully for always trying to navigate every conceivable difficulty in advance. He ended up swapping with Sam instead. As it turns out . . . I am now in Wittenberg but my luggage is still in Amsterdam. Stupid, stupid Ben!