Libertarian economist Thomas Sowell (2001) argues that immigrants during Riis's time were typically willing to live in cramped, unpleasant circumstances as a deliberate short-term strategy that allowed them to save more than half their earnings to help family members come to America, with every intention of relocating to more comfortable lodgings eventually. Many tenement renters physically resisted the well-intentioned relocation efforts of reformers like Riis, states Sowell, because other lodgings were too costly to allow for the high rate of savings possible in the tenements. Moreover, according to Sowell, Riis's own personal experiences were the rule rather than the exception during his era: like most immigrants and low-income persons, he lived in the tenements only temporarily before gradually earning more income and relocating to different lodgings.