> what obligation does the first have to share their bread None. However, part of the role of government (I would likely say it's entire role) is to make socie

> what obligation does the first have to share their bread None. However, part of the role of government (I would likely say it's entire role) is to make society as a whole better. It does this by imposing rules (obligations) on members of that society (taxes, a force to enforce the concept of private property, etc). In the toy case described above, it is likely to the benefit of society to have both members survive and one member be unhappy; rather than have one member survive, but be happier. Hence, the government enforces an obligation on the first person to share their food.