On Mar 6, 9:53 am, (Doug Miller) wrote:

...

and human causation is understood much
better than non-human, that's all I'm saying.

Probably not.


How do you figure that?

Don't you think that we have a pretty good handle on how much
fossil fuel is produced worldwide, and nearly as good a handle
on how much cement is produced?

Where do the uncertainties in human production of CO2 lie?

As far as the natural world is concerned, we can be a lot
less confident that nature doesn't have something hidden
from us. Consider the recent discoveries of a an undersea
CO2 lake, and arctic methane clathrates.

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FF