The Master said, “If some years were added to my life, I would give fifty to the study of the Yi, and then I might come to be without great faults.”
"The above statement was the value which Confucius set upon the study of the Yi."
"Zhu Xi supposes that this was spoken when Confucius was about seventy, as he was in his sixty-eighth year when he ceased his wanderings, and settled in Lu to the adjustment and compilation of the Yi and the other Classics."
"Ho Yen interprets the chapter quite differently. Referring to the saying, “At fifty, I knew the decrees of Heaven”, he supposes this to have been spoken when Confucius was forty seven, and explains – “In a few years more I will be fifty, and have finished the Yi, when I may be without great faults.”"
One thing remains upon both views: - Confucius never claimed, what his followers do for him, to be a perfect man."
[Appended notes to Analects 7 .16 Legge]
Personally, I would be quite satisfied if I can study the Yi for a total of fifty years. What about other Yi aficionados?