Uhm I dunno if you read the comment above, his point was that certain differences do in fact correspond with gender, e.g. Rough and tumble play is more appropri

Uhm I dunno if you read the comment above, his point was that certain differences do in fact correspond with gender, e.g. Rough and tumble play is more appropriate for most boys than it would be for the majority of girls. Do we have to prefix everything with NOT ALL to have a generally valid generalization?