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.