So, in summary, the lag of CO₂ behind temperature doesn't tell us much about global warming. [But it may give us a very interesting clue about why CO₂ rises at the ends of ice ages. The 800-year lag is about the amount of time required to flush out the deep ocean through natural ocean currents. So CO₂ might be stored in the deep ocean during ice ages, and then get released when the climate warms.]

I never spoke about compromising principles, that way well have been a mistake on my part. When I said Objectivism needs to change, I was referring to the objectivist movement, as opposed to the philosophy. Our methods are wrong, the way we advocate voluntary co-operation between people whilst at the same time spend much of our effort attacking the principles of other opbjectivists, as opposed to statists, fundamentalists, socialists, and many others, points out a deep contradiction within our movement. Rand was especially guilty of this, such as when she attacked the libertarian movement. Of course, we (Myself included) may find that Objectivism is a superior philosophy to libertarianism, but this is self-defeating. Libertarians should be our allies, as should all right-wing groups, but ESPECIALLY fellow objectivists, whether we regard them right or wrong on specific subjects, as we have more to gain from co-operating with them than we do but creating a line of ideological difference.

That was to do with the "global cooling" effect caused by sulphur emissions, which we can now account for.