论魏延"从子午谷袭长安"之计不可行

关于诸葛亮不用魏延“从子午谷袭长安”计一事，历来史学家、文学家多有臧否。台湾作家柏杨先生对此计尤为赞赏，认为它成功的可能性是百分之百。该文依据当时蜀魏双方的攻防情势及多因素，对柏杨之论提出置疑，并认为魏延之计并不可行。

On the Impossibility of Wei Yan''''s Stratagem of "Making a Surprise Attack on Chang-an fron Ziwu Valley"

Many historians and litteratures have passed judgments about that Zhu Geliang didn't adopt Wei Yan's stratagem to make a surprise attack on Chang-an. And Mr. Bo Yang, a writer from Taiwan, particularly appreciates the stratagem and thinks that the stratagem could be successful absolutely. According to the attack and defense situation of the time as well as some other factors, in this article, the author puts forward his doubt about Bo Yang's viewpoint and considers that Wei Yan's stratagem is impossible.