One of the greatest challenges facing HDI-IV is the lack of systematic documentation of the lessons learned from the programme, its impact and benefits, and its cost-effectiveness.
38. 人类发展倡议第四阶段面临最大挑战之一是缺乏系统记录该方案所吸取的教训、该方案的影响和好处，以及该方案的成本效益。