um, the kyoto protocol, eisenstadt was working for the clinton administration at the time pushed using markets just like we did for so2, just like we did for lead which, by the way, whenever i've written about emissions trading and market pricing pollution, if you want to say it, i've never -- >> guest: exactly. [laughter] yeah. and it's another ronald reagan story. >> host: absolutely. >> guest: reagan in his cabinet meeting said, you know, when i was a young man and gasoline was considered this great technological advance, and now we're going to get rid of it. you all remember? and he looked around his cabinet room, and he said, none of you are old enough to remember. [laughter] >> host: right. so when he was arguing against the europeans, basically, he wanted to have a mandate -- [inaudible conversations] >> host: yeah, yeah. command and control. he said there are three issues; cost, cost, and cost. and the cost of mitigating climate change without a system would be far too expensive for any economy to bear. do you agree with that? because as we know, our attempt in the u.s. to set