We don't understand how important it is. None of these assumptions have anything to do with why women are staying away from the Internet in droves. The Internet and the World Wide Web are actively and aggressively hostile to women. Not the technology itself, but the attitudes of the people who are using it. Here it is in spades.
Man uses and dominates computer.
Therefore, man uses and dominates woman. This is the pervasive and persistent metaphor working barely beneath the patriarchal and misogynist attitudes that poison so many women's experiences with the Internet. Mind is perpetuated. And it effects how men and women relate to each other on-line. It makes the Internet just a high-tech place for men to harass women.