As seen in our study of praxeology, production should not be equated with work, since value is not determined by labor or other costs (pp. 4.4:35-8, 4.8:17-9). Although hard work may be required to achieve a value, productive individuals seek to realize their goals intelligently and efficiently and do not expend unnecessary labor for its own sake; indeed, they typically hold the notion of "busy work" in contempt. Our praxeological analysis also emphasized that the ultimate goal of production is always consumption (pp. 4.4:8-9). While some goals may merit long work hours, the truly productive individual is not a "workaholic," but sets aside enough leisure time to enjoy his or her life and in particular the values created. A life spent in relentless, unrewarded toil would represent not productiveness, but sterility.