XPost: alt.global-warming, sci.skeptic   
   From: Dawn.Belle.Flood@gmail.com   
      
   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?   
      
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