i think he's doing an amazing job. mark: you're a big fan of his. >> a big fan of his. i don't agree with everything he does. ed koch had a great line running for mayor in new york. believe in nine out of 12 things you vote for me, if you believe in 12 out of 12 have, your head examined. [laughter] >> as far as beating up on amazon and online businesses. mark: amazon is successful because people use it, otherwise it wouldn't be there, would it? >> like the argument that walmart was beating up on the grocery stores. grocery stores got the mom-and-pop small grocery stores out of business, there used to be general, like the general store in town. it's an evolution of business, and in the end, we all have a better life because of it. mark: because, is it not true that a capitalist economy is a dynamic vibrant economy, and competition creates different