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Different in genre and scale , the two books address the same phenomenon : the erosion of the taboo against black-white intermarriage , a taboo far older and deeper than those against unions between whites and Native Americans , Latinos or Asians ( a subject they treat only incidentally ) . Obviously , in their design and scale , the September 11 events were horrendous and they precipitated spectacular reactions ; all of which will undoubtedly leave an indelible mark on the international legal system . " As Voice-over-IP networks begin to rollout and scale , the problems at the IP network borders are coming to the forefront .