Greene doesn't really think it's horrible, just that people mistakenly think it's horrible and recoil from irrealism about XML 'rightness tags' on actions because they think it would mean that they should start robbing and murdering. Nick does acknowledge Moravec on his website now, after being informed about it (he wasn't aware before that).

Perhaps I shouldn't have covered both being a messenger and acknowledgment of related independent work in the same post.