With all the discussion around gender differential disorder these days, it brings back an old question I had about 10 years ago: what if a person with an sdd goes to apply:
1. to be a Catholic priest or a nun?
2. a single-sex school?
(1) brings the most interesting discussion as it is defining a rule based on science (gender) and the science is giving a non-boolean answer.
(2) brings similar issues as the IAAF as it has sports performance implications among other issues.