Allowing market signals to work will do more to boost productivity than cack-handed industrial policy.

允许市场信号发挥作用要比笨拙的产业政策更能促进生产率的增长。

He points to 2002, when the cack-handed introduction of a new A-level curriculum led to soaring grades. Exam boards panicked, and shunted grade boundaries to drag them back down.

他指出当2002拙劣的新a等级考纲导致考分飚升时，慌乱的考试委员会调整了划分标准使考分下降。