The paper reexamines the welfare economics of intergenerational risk. Risk and its resolution over time are modeled as a decision tree: in each period, the consumption of the current one-period living generation is to be traded-off against uncertain benefits of future generations; as time...

We propose a new and tractable model of fairness preferences to understand how leaders' often stated goal of intergenerational fairness influences their actions. We parameterize two distinct dimensions of fairness preferences, deterministic and stochastic fairness, to capture the heterogeneity...

The paper reexamines the welfare economics of intergenerational risk. Risk and its resolution over time are modeled as a decision tree: in each period, the consumption of the current one-period living generation is to be traded-off against uncertain benefits of future generations; as time...

The paper reexamines the ethics of intergenerational risk. When risk re-solves gradually, earlier decisions cannot depend on the realization of later shocks and, consequently, some inequalities across generations are inevitable. To account for these inequalities, risky intergenerational...

I study the egalitarian way of distributing resources across generations. Distributional equity deeply conflicts with the Pareto principle: efficient allocations cannot guarantee that i) each generation be assigned a consumption bundle that is at least as large as an arbitrarily small fraction...

In their book Climate Change Justice, Eric Posner and David Weisbach advocate adoption of an economically optimal climate treaty coupled with foreign aid (to handle distributional issues with poor countries) and increased investment (to transfer funds to future generations harmed by climate...

In Fairness versus Welfare, we advance the thesis that social policies should be assessed based entirely on their effects on individuals' well-being. This thesis implies that no independent weight should be accorded to notions of fairness (other than many purely distributive notions). We support...

Current Office of Management and Budget (OMB) guidelines use the interest rate as a basis for the discount rate, and have nothing to say about an intergenerationally fair discount rate. We derive this discount rate by differentiating a social welfare function with respect to perturbations in...

Most legal academics and policymakers believe that notions of fairness should be accorded positive weight in evaluating legal policies. We explain, however, that ascribing importance to any notion of fairness (other than one concerned solely with the distribution of income) will sometimes lead...

Most legal academics and policymakers believe that notions of fairness should be accorded positive weight in evaluating legal policies. We explain, however, that ascribing importance to any notion of fairness (other than one concerned solely with the distribution of income) will sometimes lead...