Tetris written (by a female hacker) in sed

"Wiring of the brain" was a poor cliché to use to refer to the innate physiology of the brain, if accuracy is demanded. The physiology of the brain, of course, does differ in a number of general senses between males and females.

Opinions, however, are typically based upon memories - and judgments built upon those memories - although emotion and some hormonal factors (such as serotonin and dopamine levels) have a significant effect too.

Short term memory and the executive acts of judgment are defined by variations in potentiation between neurons in the prefrontal cortex. Whether or not you consider "electrical" patterns in the brain to be as "physical" as actual brain layout is, of course, likely to remain a contentious point.

Now.. if you take it out to long term memory, you might, at least, have forced a stalemate. Long term potentiation between certain neurons (as in the formation of long term memory) does, indeed, result in a "physical" change through the formation of synapses. I don't personally consider these changes as "physical" in the sense of my original argument (which was not written with the consideration I'd need to back up the terminology used) but I accept that there is a potential stalemate here, since almost everything can be reduced to physicality depending on how detailed a view you wish to take.

My argument is really that attributes free will cannot change (such as biological gender) are physical in nature, whereas those attributes free will can adjust are not. In this sense, I maintain gender is entirely based upon physical attributes, whereas other human attributes are not necessarily.