That's different from what is being referred to, which is (very briefly) described at http://en.wikipedia.org/wiki/Parametricity#History http://en.wikipedia.org

That's different from what is being referred to, which is (very briefly) described at http://en.wikipedia.org/wiki/Parametricity#History http://en.wikipedia.org/wiki/Parametricity#History. Edit: Ah, I didn't realize that there was an edit involved in the post you were referring to. At any rate, things are hopefully now clear to all.