Previously on Femslash Friday: The Young Avengers. Star Trek's greatest appeal, if you talk to the nerds who are really into it, is its bold embrace of a post-scarcity structure. In Star Trek, technology has allowed humanity to earnestly and fully eliminate sexism, racism, poverty, even extreme weather disasters or pollution. Every single structural problem on Earth is truly gone forever, they're all really gone, and now humanity is doing the only thing…