The case against those who see Objectivism as a closed system has been mounted within the ranks of Objectivists. Indeed, the very terms “open” and “closed” systems were coined in a published exchange I had with Leonard Peikoff in 1990, and the battle has been raging for years between the orthodox and the independent wings of the Objectivist movement. Fortunately, there are now many of us in the latter wing. Readers following this thread may be interested in my account of the issues, The Contested Legacy of Ayn Rand: Truth and Toleration in the Objectivist ... (read more)
Ha! I searched for Kelley to see if anyone else had pointed out that not every Objectivist went the closed system route, and Kelley himself had beat me to it.
He also wrote The Art of Reasoning, and there is even a web site with interactive tutorials on the book: http://www.wwnorton.com/college/phil/logic3/
The case against those who see Objectivism as a closed system has been mounted within the ranks of Objectivists. Indeed, the very terms “open” and “closed” systems were coined in a published exchange I had with Leonard Peikoff in 1990, and the battle has been raging for years between the orthodox and the independent wings of the Objectivist movement. Fortunately, there are now many of us in the latter wing. Readers following this thread may be interested in my account of the issues, The Contested Legacy of Ayn Rand: Truth and Toleration in the Objectivist ... (read more)