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Imagine for a moment what it is like to have to merely choose where to sleep. Will you choose to sleep near other houseless, or by yourself in isolation? Will you sleep facing a wall with your back exposed or facing outwards where other people know you are sleeping because they can see that your eyes are closed? Either position imbeds an extraordinary lack of security. Now imagine, a train, or car, or passerby waking you up every two hours. You have to walk around the block. Go back to sleep. Imagine trying to hold a steady job under these conditions.