Thriller in US #1

I have not really been scared with gun shots here in Los Angeles. Let me talk about an issue which I have discussed with people from Japan many times but not with people here.
Thriller in US #1
There are some black holes where papers fall into when some documents are processed.
Actually, a lot of documents are lost, at least according to what people around me say. A strategy is to save a copy. The other is to mail same documents twice. Do you have something to feel about this issue? Is this something matter-of-cause? Or do you have any better strategies? Opinions wanted!