Is this even a trans issue, as so many seem to have assumed? It is certainly a sporting and practical one. Clearly trans people deserve, and are long overdue, full personal, legal and emotional freedom to be as they are and do as they please. At the same time there are obvious problems with encouraging people who have been through a testosterone-fuelled male puberty to compete in particular sporting events against people who have not.
These are hugely complex, essentially irresolvable issues. Equal rights, health concerns, wellbeing and access to sport for young women all come into play. It is an impossibly difficult balance of interests, one that requires care and thought and sensitivity on all sides; that can only progress with trust and respect, by an absence of censure and blame, and above all by total clarity on the facts.
At which point, well, here comes everybody. Here comes the startling ineptitude and tardiness of the IOC in addressing this issue. Here come stampeding online hordes, opportunist politicians looking for a piñata to thwack. Here comes a misunderstanding of the facts, pre-cooked argument looking for its nail which is always the same nail.