(class +ActorModel +Entity)
(rel id (+Key +Number)) # object ID, could be left out
(rel good (+Ref +Number)) # some value
(rel bad (+Ref +Number)) # some other value
(rel bigger (+List +Link) smaller (+ActorModel)) # objects with more 'good go here
(rel smaller (+List +Link) bigger (+ActorModel)) # objects with more 'bad go here

(dm check> ()
    (here goes code for selecting another object, with 'rand or lookup in 'collect, +Link, whatever, comparisons like '(> (get This 'good) (get Other 'good)) and setters for relations depending on comparison)