On the contrary, constraints on improving productivity explain why education isn't developing more quickly there than it is.

　　【长难句分析图解】

　　篇章超精读

　　①As education improved, humanity"s productivity potential increased as well.

　　②When the competitive environment pushed our ancestors to achieve that potential, they could in turn afford more education.

　　③This increasingly high level of education is probably a necessary, but not a sufficient, condition for the complex political systems required by advanced economic performance.

　　④Thus poor countries might not be able to escape their poverty traps without political changes that may be possible only with broader formal education.

　　⑤A lack of formal education, however, doesn't constrain the ability of the developing world's workforce to substantially improve productivity for the foreseeable future.

　　⑥On the contrary, constraints on improving productivity explain why education isn't developing more quickly there than it is.

　　参考译文

　　①随着教育的进步，人类的生产潜力也在进步。

　　②当竞争的环境促使我的先辈获得了这种潜力，这反过来又会促进教育的发展。

　　③这种日益提高的教育水平对于先进经济发展所要求的复杂政治体系来说可能是必要的但不充分的条件。

　　④因此，贫困国家如果不能通过提供更广泛的正规教育而带来政治的变革的话，他们就可能无法摆脱贫困。

　　⑤然而，在可预见的未来，正规教育的缺失并不会限制大幅度提高发展中国家工人生产率的能力。

　　⑥相反，对于提高生产率的制约因素正好解释了在贫困国家里教育发展不快的原因。