The DEMATEL method is a great technique to study the causal relationships that exist in any complex system, but when we based on the direct and indirect effects (Ri and Ci) of each factor to find the factor's relative importance and the relative weight we almost get equal weights for all factors, (e.g. if I've 3 factors, the relative weight will be about 0.33 for all of them), why? I used ωi= {(Ri+ Cj)^2+(Ri+ Cj)^2 }^(1/2) to find the relative importance and Wi=ωi/(∑(ωi ), i=1,2,…,n. to find the relative weight. Is this a normal result? How could we explain it?