sky of blue..you get better all the time..here is a simple litmus test..look at the rates of intermarriage with other groups...if there is none or a negligible amount stop allowing immigration from that country...groups that practice arranged marriages obviously don't arrange marriages outside of their faith and culrure..so bye bye. Faiths that insist that both their men and women wear head gear to distinguish them from others, don't marry with other groups either so bye. only groups that will intermarry with others should be allowed into a "multicultural" country