I just didn't address them.
People who design and build Rube Goldbergs just for fun are (if successful) necessarily clever; very, very few of them believe that the resulting machines are actually useful in any meaningful sense, I think, so there would be no grounds for considering them foolish.
When you fully explain your bright/intelligent distinction you should also include a list of synonyms and antonyms for each. It seems like you're using "foolish" as an antonym for one and not the other, "brainy" as a synonym for one and not the other, etc.
Bloggingheads.tv can't exactly call up, say, the President of France and get him to do a diavlog, but they have some street cred with mid-rank celebrities and academics. With that in mind, how would you fill in this blank?
"I would really love to see a diavlog between Yudkowsky and ____________."