You really think adding in a few hundred million years of extra data about the Precambrian period (assuming we have any) is going to add value to his chart or this conversation?
No humans were even alive during this period. We don't know if human life or modern civilization is compatible with this very different environment.
Pointing out that the earth used to be warmer (which we know it has been before in the very distant past) may make people feel better about global warming, but that's the only benefit I can think of. The downside is that it makes it easier for people to postpone the needed action to fix the climate and fails to address the anticipated economic and human lethal consequences of climate change.
No humans were even alive during this period. We don't know if human life or modern civilization is compatible with this very different environment.
Pointing out that the earth used to be warmer (which we know it has been before in the very distant past) may make people feel better about global warming, but that's the only benefit I can think of. The downside is that it makes it easier for people to postpone the needed action to fix the climate and fails to address the anticipated economic and human lethal consequences of climate change.