From: liz@poppyrecords.invalid.invalid   
      
   Waldek Hebisch  wrote:   
      
   [Higher sea temp -> cloud -> albido -> input energy reflection -> lower   
   sea temp]   
      
   [...]   
   > But you ignore simple thing: system with negative feedback and   
   > delay will oscilate.   
      
   The oscillation may increase to some limit or it could be   
   critically-damped or so heavily damped as to be insignificant.   
      
   >And there are a lot of delays in the   
   > system.  There is also a lot of nonlinearties.   
      
   There is little sign of oscillation and the chain of events above has   
   only one slow effect, which is the change of sea temperature itself; all   
   the other effects are comparatively rapid.  When you have a negative   
   feedback loop with one very dominant pole, it is stable as long as none   
   of the other parameters is so non-linear as to make the feedback   
   positive at some point.   
      
      
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   ~ Liz Tuddenham ~   
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