Lost really has two disparate meanings. Losing things is about the familiar falling away, getting lost is about the unfamiliar appearing. There are objects and people that disappear from your sight or knowledge or possesion; you lose a bracelet, a friend, the key. You still know here you are. Everything is familiar except that there is one item less, one missing element. Or you get lost, in which case the world has become larger than your knowledge of it. Either way, there is a loss of control.
~ Rebecca Solnit, A Field Guide to Getting Lost