Rio Olympics 2016: Russia athlete ban upheld by Cas

Are all athletes cheating obviously not the trouble is the governing body doesn't seem to know who is and who isn't so the viewer has no chance and no one likes to support anyone watch them win or do well and then see them fail the drug test. It's another case of a minority ruining something for the majority both fellow athletes and supporters perhaps the only way round it is for a country to select it's competitor's they go into a sort of IOC compound until the tests are complete. Only those that pass participate in the games that start a day after all tests are completed that way they have no chance to obtain whatever stuff you use to cheat.