一清朝学者阮元在《清远峡记》中说:“凡水,分流有二者,最易留其一、塞其一。”就拟制的发展而言,古罗马法踩踏出两条路径,一条是“法律解释”的路径,另一条是“立法政策”的路径。在这两条路径中,隐含着后来两大法系拟制道路的分野:一条是大陆法“立法政策”的拟制道路,一条是英美法“司法解释”的拟制道路;或者说,一条是大陆法“整体协调性”的拟制道路,一条是英美法“个别适应性”的拟制道路。杨兆龙先生曾说:“惟专就‘推定’和‘拟制’而言,其在英美法的运用范围往 A Qing dynasty scholar Ruan Yuan said in the book Qingyuan Xia Ji: ”Where water and diversion are the two most likely to be left behind, the first one is to stop it.“ ”In terms of the proposed development, the ancient Roman law trampled two Path, one is the path of “legal interpretation ” and the other is “legislative policy ” path. In both of these two paths, there are implicit differences between the two later legal drafting paths: one is the proposed path of civil law “legislative policy ”, one is the proposed path of Anglo-American law “judicial interpretation ”; Or, one is the proposed way of civil law “overall coordination ” and the other is the proposed way of “individual adaptation” of Anglo-American law. Mr. Yang Zhaolong once said: "But in terms of ’presumption’ and ’fiction’, its application in Anglo-American law