The next target for this "professor" is Mattel and Toys-R-Us. Walk into a Toys-R-Us store and you can tell from 100 feet away where the girls' aisles are located - pink boxes from floor to ceiling. Mattel needs to be sued for their stereotypical packaging and Toys-R-Us really needs to stop "gender" segregating the childrens' playthings.
i have all boys and from the moment they started walking they knew the difference between the boys aisles and girls aisles in toys-r-us.
i would try and get them to go down the girls aisles and look at the stuff just as an experiment many times -- no luck.