wait a minute: it is not as if runners haven't tested positive for doping or been demonstrated to have been doping in setting world records and top times. The 1980s Eastern Bloc is suspect because they had documented, systematic doping programs covering all the greats, including Cierpinski (1976/1980 marathon winner), Dreschler, Koch, the 800m woman, Kazankina, and on and on. The 1990s Chinese runners are suspect because massive #'s of Ma's athletes tested positive later on and of course because many of them would run far faster than anyone else in history, but not outside the country. The 1990s male distance runners smashed the world records and legions ran under the old records during the era of EPO being widely available and untestable. Later on, some of those athletes (Mohammed Mourhit, Ali Saidi-Sief, and others) tested positive. Fifteen years later, most of those times were untouchable. The Ethiopian distance runners have been great for a long time, but with both Ethiopian and Kenyan athletes we note the European coaches or agents and wonder, particularly when we find out that out of competition blood-testing was not taking place in Kenya (where Aden's athletes train) and that masses of athletes in the marathon are smashing all pre-2000 records on a weekly basis. Dibabas are obviously the greatest distance running family in history. A 3:55 runner can run 8:16. But with a 4:12/4:04 solo from before 1k, she is worth sub 8:10 outdoors and that's some scary company.