Look at Knuth&#x27;s future book plans, and consider all the things he&#x27;s not putting in them that are current.  He&#x27;s also revisited the books some, and plans to do so again in the future.<p>I don&#x27;t mean to take away from the books - they&#x27;re beautiful and full of a lot of timeless knowledge.  There&#x27;s just something that seems a bit ... I can&#x27;t even find a word for it ... about the endeavor.