“Favorite fun fact from researching A City on Mars was how ASTP in 1975 had to have androgynous docking so nobody was the girl spaceship”
From Apollo-Soyuz Wikipedia entry: “American and Soviet engineers settled their differences for a possible docking of American and Soviet spacecraft in meetings between June and December 1971 in Houston and Moscow, including Bill Creasy's design of the Androgynous Peripheral Attach System (APAS) between the two ships that would allow either to be active or passive during docking”