As a result, the only feasible forms of production use very few low-skilled workers – and thus operate at low productivity. They specialize in food preparation, retail, construction, repairs, Internet cafes, and myriad other activities that can be carried out at home and sold to neighbors (often through a window facing the street).
但发展中国家城市贫困人口棚户区急缺拼凑起来即可实现高效生产的各类技巧。于是唯一可行的生产形式只能吸纳少数低技术工人，生产效率也极为糟糕。他们一般从事食品制作、零售、建筑、维修、网吧和其他几种可以在家完成并（通过临街窗口）向邻里出售的活动。