 One worry about the Carensian model is that it might be unrealistic to expect an economic system to work well when it relies so heavily on a sense of duty to motivate people to make cooperative contributions. This worry could be assuaged by presenting this model as the long-term target of a socialist transformation which would progressively develop a social ethos supporting it (Gilabert 2011, 2017a), by noting empirical findings about the significant traction of non-egoistic motives in economic behavior (Bowles and Gintis 2011) and the feasibility of “moral incentives” (Guevara 1977, Lizárraga 2011), and by exploring strategies to mobilize simultaneously various motivational mechanisms to sustain the proposed scheme. Two other worries are the following (Gilabert 2015). First, the model makes no explicit provision regarding real opportunities for work in self-managed firms. To cater more fully for ideals of self-determination and self-realization, a requirement could be added that the government promote such opportunities for those willing to take them. Second, the model is not sufficiently sensitive to different individual preferences regarding leisure and consumption (requiring simply that everyone work full time and wind up with the same consumption and leisure bundles). More flexible schedules could be introduced so that people who want to consume more could work longer hours and have higher salaries, while people who want to enjoy more free time could work fewer hours and have lower salaries. Considerations of reciprocity and equality could still be honored by equalizing the incomes of those working the same number of hours.