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.