Same sex marriage

[StatCrux]

Ever heard of AIS? Androgen Insensitivity Syndrome. A person with XY chromosomes is insensitive to androgen and develops physically as a female, so we cannot use chromosomes as a way of defining male/female. Or are you saying that AIS women are really men?

Like I said, you cannot exclusively use chromosomes if someone has a severe genetic mutation.

The whole point of this is that exceptions to a rule invalidate that rule, right? So if some people can have XY chromosomes and be female, you cannot say that XY chromosomes indicate male? So how can we define male and female?

"If the validity of the principle does not rely on its universal applicability then by definition that argument is invalidated."genkaus