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.