Abstract: Seabright comments on two issues in Roemer's paper: (1) the comparison of theory with practice when technologies are changing over time is more difficult than Roemer implies; and (2) while he is in agreement with the enterprise of developing normative rules and using them to assess the practice of policy-makers, Seabright believes that Roemer needs a more persuasive rule than the leximin allocation rule.

Keywords: leximin rule, monotonicity, resource allocation, technologies,