Image via Flickr . The following text appears as the introduction to Shulamith Firestone’s Airless Spaces , reissued by Semiotext(e) and out next week. To read more on Shulamith Firestone, see n+1’s 2013 series of reflections on her life and work, published in Issue 15. “I keep thinking, I’m 22, what have I done?” Shulamith Firestone told the young documentary filmmakers who followed her around during her last year as a student at the School of the Art Institute of Chicago. It was 1967 and they’d chosen her as an exemplar of “the Now Generation.” “I want to catch time short and not just drift along with it,” she says to her off-camera interviewers.…