If there is disutility in throwing away 10 nuggets, then it is optimal to order only 10, because there is only utility from 10 either way. The article seems to

If there is disutility in throwing away 10 nuggets, then it is optimal to order only 10, because there is only utility from 10 either way. The article seems to suggest that people's utility is measured in kcal/dollar - which is silly even to the most socially inept economist.