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.