Food loss remains one of the central points of collective action around the world, as reflected in the 2030 Sustainable Development Agenda, but this issue is far more concerning for the developing countries. Several studies highlight the level and stages of food losses. However, there is limited...

This paper develops two straightforward value of life models; one is a probabilistic value of life model and the second is a determinstic value of time model. Simplifying assumptions allow both models to be solved analytically. Constant relative risk aversion utility functions are used, and both...

In this short paper we provide two versions of Arrow’s impossibility theorem, in a world with only one preference profile. Both versions are extremely simple and allow a transparent understanding of Arrow’s theorem. The first version assumes a two-agent society; the second version, which is...

This paper modifies the standard tort model by introducing role-type uncertainty, that is, it is assumed that neither party knows in advance whether she will become the victim or the injurer when an accident occurs. When the standards of care of the two parties are assumed to be set at the...

In this paper we provide a simple new version of Arrow’s impossibility theorem, in a world with only one preference profile. This theorem relies on a new assumption of preference diversity, and we explore alternative notions of preference diversity at length.