I'm not saying that there aren't differences, I'm just saying they are practically negligible when they are compared to social differences. I don't doubt an MRI can predict sex relatively well, but a far more accurate prediction can be based off of what type of underwear you wear and whether you carry a purse or a wallet.
The social constructions and stratifications we have made for ourselves are far more powerful than differences in our own genetic code. It's largely this ability to modify ourselves through society that differentiates us from other animals.
Do you base that conclusion on a careful reading of the empirical evidence?
> The social constructions and stratifications we have made for ourselves are far more powerful than differences in our own genetic code. It's largely this ability to modify ourselves through society that differentiates us from other animals.
Tell that to someone with Down syndrome. Genetics are quite powerful.
Since the industrial revolution humanity has changed so quickly to become practically unrecognizable to those who came before it. A "careful reading" of Darwin, Dawkins, or any credible geneticist explains that is not even a blip in the genetic timescale. How could you explain that change with genetics alone?
There is fairly well established science outside genetics that establishes that the average distribution of brains in bimodal over female and male sex. An MRI scan can predict your sex better than random choice. There is plenty of people who outright dismiss such results as "bad science" because they interpret the results wrong and draw bad conclusions (mostly that either female or male brains are worse somehow for everyone).
These are averages. Lots of people being measured. Nobody who properly reads the studies for this should conclude that there is a typical female or male brain. There are some features that are more likely to be present in either, some less like to be present or differently expressed. On average. It's perfectly possible for a female to have a brain that would have only features that are more typical for male brains and a male may have features more typical for females while they behave perfectly normal compared to a control.
There are plenty of features that differ between males and females on average and there is no problem when one has a feature being expressed in a way more typical of the other sex (just think of hip size, hair, height, voice, etc).