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" Concern over relationships and social standing is a harder stumbling block . While it was cooking a ranger stumbled upon the man , and when he saw what he was up to , he immediately arrested him - because as you know , that is quite illegal ! The proposals deal with the creation of sockets able to adjust to the swelling and shrinkage of an amputee 's stump during the course of the day , knees that help prevent falling when a wearer stumbles , and microprocessor-controlled prosthetics to obtain a more natural gait . " Lost on a rainy Friday night , a nun stumbles into a monastery and requests shelter there .