alt Hacker NewsTechnically correct, but to be specific sex is binary, not merely bimodal. Sex is entirely defined by gametes, and is binary in anisogamous species such as humans. Isogamous species don't have sexes, they have mating types (and often many thousands of them).
There's actually an ideological movement to try to redefine sex based on sex traits instead of gametes, but this ends up being incoherent and useless for the field of biology. Biologists have had to publish papers explaining the fundamentals of their field to counter the ideological narrative:
Why There Are Exactly Two Sexes
https://link.springer.com/article/10.1007/s10508-025-03348-3
That's why I thought it was worth mentioning. Many people are confused because of the culture wars. To bring it back around to the general topic of this thread, it's fine to store someone's sex as a boolean, because sex is binary and immutable. Storing cultural constructs like gender as anything other than an arbitrary string is asking for trouble, though.
Reproductive sex is determined by gametes .. sure.
Not all humans are born with the attribute of reproductive sex via gametes.
Hence "biological sex is real and strongly bimodal with outliers" (in humans, it gets odder elsewhere in animal life on earth) it's just not all reproductive sex, nor is all just strictly M or strictly F despite it mostly being one or the other.
> To bring it back around to the general topic of this thread, it's fine to store someone's sex as a boolean, because sex is binary and immutable.
Not in Australia, via a decision that ascended through all levels of the national court system, nor is sex, as you've chosen to define it ("entirely defined by gametes") binary.
Biology is truly messy. It's understandable not everbody truly grasps this.
Colin Wright is pretty much a prop up cardboard "scientist" for the Manhattan Institute (a political conservative think tank).
I tend to run with people with actual field credentials doing real biology and medicine; Michael Alpers, Fiona Stanley, Fiona Wood, et al were my influences.
If Colin Wright scratches your itch for bad biology then by all means run with the one hit wonder who reinforces a preconception untroubled by empiricism.