Two is that he didn’t personally attempt to achieve PNSE until 2010, after he had done all of the research described in the paper (and probably after writing the paper itself), and having the actual PNSE biased him to think of PNSE more positively afterwards.
So even when he knew it was wireheading (or at least, had observed all the parts of that concept without necessarily having a word for it), he got sucked in when he had the experience himself.
So even when he knew it was wireheading (or at least, had observed all the parts of that concept without necessarily having a word for it), he got sucked in when he had the experience himself.
Wireheading does that.