Why is There a Women's Bathroom in "12 Angry Men"?

And whether details like this in movies are meaningful or insignificant

I just watched “12 Angry Men” with a college class, and the question in the title of this piece kept bugging me.

After all, you don’t need a women’s bathroom in a movie involving twelve sweaty dudes.

However, throughout the movie there’s a women’s bathroom staring at us. The word “WOMEN” is prominently on the door. It must be in dozens of shots, a few o…