8/24 于光远不可能有个私生子叫于力（司马南）。11届三中全会，邓小平发言稿与华国锋发言稿的捉刀人之争。

于光遠（1915年7月5日－2013年9月26日），原姓郁，名锺正，男，上海人，中国經濟學家、哲學家、教育家、馬克思主義理論家、中國改革開放的重要參與者和見證人。
1975年，鄧小平復出，任國務院副總理職務。隨即成立“政治研究室”，避開四人幫，設在國務院，由自己直接領導。其中共有七個負責人：胡喬木、于光遠、鄧力群、胡繩、吳冷西、熊復、李鑫，胡、于、鄧三人為主要負責人。龔育之稱之為鄧小平的“秀才班子”。

他绝不可能是司马南（于力）的亲爹。

英语版的维基百科对于光远的出身有更翔实的内容介绍：
The Yu (郁) family, with kinship ties to powerful government officials, intellectuals, and businessmen of the Qing Dynasty across China including the "red-topped hat" merchant Hu Xueyan, prospered from maritime trade and banking in the mid-19th century, reaching its zenith during the Daoguang reign. Reluctant association with the Small Swords Society in 1851, when the Rebels converted the Yu Family's courtyard and the Yu Garden as their two headquarters, led to blackmailing from the Qing government after the Xianfeng court quelled the rebellion, which further aggravated economic woes of the family. Since the Tongzhi period, the family's "sand-shipping" business steadily declined, under pressure from more advanced ships. Yu Guangyuan's maternal uncle is the late Qing and early Republican politician Cao Rulin, who is said to have predicted Yu's illustrious future while holding the infant in his arms. Yu's father, trained in chemical engineering, served briefly in the Republican government during Yuan Shikai's presidency.