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.