It's actually a reference to a disclaimer in Algorithm Design Manual. I don't think he actually reviewed the lecture notes. The Algorithm Design Manual had the

It's actually a reference to a disclaimer in Algorithm Design Manual. I don't think he actually reviewed the lecture notes. The Algorithm Design Manual had the following(page ix in second edition) "Any errors, deficiencies, or problems in this book are somebody else’s fault, but I would appreciate knowing about them so as to determine who is to blame." Hence the joke. Source: Steve told me.