The best-designed policies are always contingent on local conditions, making use of pre-existing advantages and seeking to overcome domestic constraints. That is why successful reforms often do not travel well.
最佳设计的政策总是取决于当地情况，利用现有优势并且努力克服国内限制条件。这就是为何成功的改革不能总是照搬。毕竟，改革并非温室作物，可以随意在任何土壤中移植。