End Sex Segragation at the Olympics

The reasoning presented in this article about not checking the sexuality of Olympic participants would lead one to state that since there is no true way to tell if they are a man participating as a woman, or vice verse, just end the division based on sex. That would be the only fair way. Since the athletes are to be sexually identified based on "The only dependable test for gender is the truth of a person’s life, the lives we live each day. Surely the best judge of a person’s gender is not a degrading, questionable examination. The best judge of a person’s gender is what lies within her, or his, heart." then it is idiotic to divide the competitions by sex. Let them all compete openly and together.