Given this new research, how should we use the male/ female gender distinctions? (poll 8086309)

Given this new research, how should we use the male/ female gender distinctions?

For sexual orientation only, so I know who to hookup with and marry

As a ready rule, so I can prejudge a person's interests and capabilities

To create a social identity that I can associate with and rail against (as I do my football team and political party)

As a binary designation to construct a complex set of social rituals and prejudices

All of the above

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See this poll on: https://poll.fm/8086309/embed