Posted for posterity, too late to be a substantive contribution to the conversation;
an NPR interview with Bechdel zherself:
http://www.npr.org/2015/08/17/432569415 … t=20150817
I have to confess, I stole this whole thing from a friend of mine at the time because I didn't have an idea for my strip. My friend Liz Wallace ... said, "I'll only see a movie if it has at least two women in it who talk to each other about something besides a man." That left very, very few movies in 1985. The only movie my friend could go see was Alien, because the two women talk to each other about the monster. But somehow young feminist film students found this old cartoon and resurrected it in the Internet era and now it's this weird thing. People actually use it to analyze films to see whether or not they pass that test. Still ... surprisingly few films actually pass it.