Social production works mostly under the same rules as the Military production and is spent on projects. Amount of social production is set by moving sliders on Finance management window, and is represented by hammers on the Colony Management screen. Each hammer represents 1 bc worth of output, i.e. you are paying 1 bc for each hammer. If the hammers are in parenthesis it indicates that no projects are queued. In very early versions of the DL game (before 1.X) the player was charged for that "empty" production anyway. All later game versions and expansion packs transfer those unused hammers into military queue. To be used there, the military spending rate must not be set to 0%. If a planet doesn't have a Starport, or doesn't have a ship in starport's building queue, those hammers remain