The claim that the level of well-beingeach enjoys ought to be to some extent afunction of individuals'' talents, efforts,accomplishments, and other meritoriousattributes faces serious challenge from bothegalitarians and libertarians, but also fromskeptics, who point to the poor historicalrecord of attempted merit assays and theubiquity of attribution biases arising fromlimited sweep, misattribution, custom andconvention, and mimicry. Yet merit-principlesare connected with reactive attitudes andinnate expectations, giving them some claim torecognition and there is a widespread beliefthat their use indirectly promotes thewell-being of all. (...) After critically evaluatingarguments for and against assigning a prominentrole to merit in a distributive protocol, it isargued that an entitlement to the ``doubtful andspeculative'''' but not the ``known andpresumptive'''' components of well-being can flowfrom perceived relative merit. However,statistical equality of outcome with respect togroups is mandatory. Semi-meritocracies aredefensible institutions, but existing rewardschemes by and large do not meet the conditionsof social justice. (shrink)