Nevertheless, simply substituting environmental determinism won't work, either. Our brains have around one million billion neural connections; if you started counting them now, you'd finish in 32 million years (and by then you'd have evolved into a higher being with more important things to worry about). And the operative word here is individual. Even within one culture, one society, there is immense variability, enormous complexity.
If there are neuropsychological sex differences, clearly, we don't know what they are or what causes them. Perhaps to the point, whatever differences have been tallied in the past are gone, or are disappearing rapidly. In the end, there may be subtle differences, but don't bet any real money on these ever predicting who'll be the better nurse or engineer.
Because however much we yearn for simple truths, there aren't any here.
