Boolean logic extends just fine to handle complexity. Instead it’s the intuitive classification people come up with that are often a poor fit for reality.
Is someone’s DNA consistent throughout their body? Y/N
Does someone have any chromosomal anomalies? Y/N etc
Similarly it’s very possible for a girl to suffer from abnormally low testosterone levels which doesn’t fit with how the public thinks of it as a gendered hormone. During puberty it normally spikes in both girls and boys. From a range of (2.5 - 10) in prepubescents, the typical range in puberty for boys is much higher (100 - 970) vs (15 - 38) but that doesn’t make it a male hormone just a pathway used differently.
Is someone’s DNA consistent throughout their body? Y/N Does someone have any chromosomal anomalies? Y/N etc
Similarly it’s very possible for a girl to suffer from abnormally low testosterone levels which doesn’t fit with how the public thinks of it as a gendered hormone. During puberty it normally spikes in both girls and boys. From a range of (2.5 - 10) in prepubescents, the typical range in puberty for boys is much higher (100 - 970) vs (15 - 38) but that doesn’t make it a male hormone just a pathway used differently.