XPost: alt.global-warming, alt.atheism   
   From: paul.aubrin@invalid.org   
      
   Le 31/01/2026 à 20:20, Dawn Flood a écrit :   
   > On 1/31/2026 11:42 AM, Paul Aubrin wrote:   
   >> Le 31/01/2026 à 16:59, Dawn Flood a écrit :   
   >>>> NB : "Natural" systems are more or less stable over extended time   
   >>>> periods, thus they cannot have have "positive feedbacks".   
   >>>   
   >>> What, then, ended the last ice age?   
   >>   
   >> Noone really knows, but astronomical parameters are probably the main   
   >> cause. Feedbacks follow a cause, temperatures variations precede CO2   
   >> variations. Natural systems must have a large stability margin around   
   >> their current state. Systems with positive feedbacks are inherently   
   >> instable or at the brink of instability (which is visible).   
   >   
   > And, so, you acknowledge climate feed backs just so long as humans are   
   > not involved?   
      
   CO2 variations, follow temperature variations.   
      
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