Thanks for the explanation. I can see how "not" fits this definition (as opposed to "and" and "or") by the accident of being a unary function. Whatever the auth

Thanks for the explanation. I can see how "not" fits this definition (as opposed to "and" and "or") by the accident of being a unary function. Whatever the author is trying to illustrate doesn't seem especially deep. Having looked at some other scattered writings, I agree with them being a crackpot.