The science fiction novel Ender’s Game is best remembered for its primary plot, about a genius child who leads Earth’s forces to genocidal victory against aliens; but it also has a secondary plot line that seems, in retrospect, terrifyingly prescient. While the protagonist Ender is learning to become the greatest space-general in history, his near-equally-gifted pre-teen brother and sister, left behind on Earth, take up politics. Peter and Valentine set up pseudonyms on a global online message board and spar theatrically, building competing followings and eventually real-world political influence. By the novel’s end Peter has leveraged his online clout into the leadership of a worldwide government.

I read Ender’s Game in the mid-1990s, when it was truly science fictional to imagine the whole world connected in a single messaging system, much less using devices portable enough to carry in a backpack. By 2004, my final year of undergrad, I acquired a bulky Dell laptop which was, most excitingly, capable of using the wifi network that had just been installed in my campus apartment complex — and I’d already gone from a hand-coded HTML personal website to a series of blogs hosted on the most obvious choice, Blogger.com. Multiple of those blogs were social affairs, shared with friends, but their connection to people elsewhere on the Internet was entirely mediated by individual “<a href=” hyperlinks. Midway through graduate school, I accepted responsibility for building a website for a conference to be hosted by my home department, and decided to try embedding a new messaging platform I’d heard about: Twitter.