Common lesbian-feminist critiques leveled at bisexuality were that bisexuality was anti-feminist , that bisexuality was a form of false consciousness , and that bisexual women who pursue relationships with men were "deluded and desperate. Therefore, the brain could be feminized while other features, such as the 2D: But leaving that aside, their study does show some interesting results. Dixon found that bisexual men had more sexual activities with women than did heterosexual men. Simon LeVay has criticized Hirschfeld's theory of an early bisexual stage of development, calling it confusing; LeVay maintains that Hirschfeld failed to distinguish between saying that the brain is sexually undifferentiated at an early stage of development and saying that an individual actually experiences sexual attraction to both men and women. He's also got the hots for Kuroro and Machi. A difference in attitude between homosexual men and women has also been reported, with men more likely to regard their sexuality as biological, "reflecting the universal male experience in this culture, not the complexities of the lesbian world.