Let's examine this and see where these people are going wrong:
First - Trans sportswomen quickly hit back. Rachel McKinnon, who last year became the first transgender woman to win a world track cycling title, called the comments "disturbing, upsetting and deeply transphobic".
Second - In its statement, Athlete Ally said Navratilova's comments were "transphobic, based on a false understanding of science and data, and perpetuate dangerous myths that lead to the ongoing targeting of trans people through discriminatory laws, hateful stereotypes and disproportionate violence".
Ally gets right to the heart of the matter and sensibly wants to root the discussion in science and data. This is particularly helpful in our understanding. Each person normally has one pair of sex chromosomes in each cell. Females have two X chromosomes, while males have one X and one Y chromosome. Ally has a pair of XY chromosomes in each cell but wants to compete in a competition that is designed for competitors who have a pair of XX chromosomes in each cell.
Now, I think we can begin to see the problem with this kind of rule breaking. What Ally should be promoting - and I don't know why nobody else has suggested this - is a series of events where people who were born male compete with similar under the guise of being female.
So you have a category of transgender Athlete's in much the same way as you have categories for Paralympic Athlete's.
That is a fitting solution to a not difficult set of circumstances. It is fair,easy to understand,does not discriminate and has the scope to promote another platform of competition with all the benefits that that suggests.
So that fixes the "science and data" as Ally refers to it and addresses her other concern, the "perpetuation of dangerous myths" because everybody could see, here is a bunch of men doing sports dressed as women.
It would be, and both Rachel and Ally would probably agree - perfectly Trans-lucent