feedback               
                                      
                            
                            
                                          
 feedback  is for  making the  process  a 
 whole lot  more  messy, to  introduce  a 
 fractal in  the spice  mix... things  or 
 populations of things  start to be  self 
        referential or self eating        
 (autovore...) or spiraling  in or out... 
                                          
 in the  sixties they did research in the 
 jungle and in the  sea  and  they  found 
 that feedback does  not give  rise to an 
 equilibrium. they  were trying  to prove 
 that nature  is a tame beast. but  she's 
                   not!                   
 this  may  hold true  out  there...  but 
 maybe  not in signal wizardry? depending 
 on  your  technique,  you  might  easily 
             find recurrences.