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.