Came from the people living up on the hill. It a division of the low class and the upper-class. a rift that just keeps getting bigger. if only one of the people up on the hill actual cared they could fix all the problems in the valley. It a them that also stands true in real life, to the wealthy don't seem to care about the poor. The exaggeration of these gaps is what makes the show comical going on even to the characters physical forms. It also up lifting that the characters some how seem to come off as a normal family "in there happy glowing home."