Earlier quoted context omitted.
> Gender is not biological so there is no biological explanation. There is considerable evidence of gender identity different from biological sex lining up with biological features in several areas more typical of the other sex, so it seems that gender identity is tied to biology. Which, if you think about it, it has to be: humans are biological machines, everything about them is biology, on one level or another. All…
Seems a tad reductionist; by that same token, all of psychology is also physics.
The bigger argument I get into with coworkers is the blurry line between brain function/behavior stuff and psychology.