Badass Bunny:
What you mean is that you do not believe that women back than dressed as a man? Because they did. With the way Confucianism treated women it wasnt a suprise. It didnt happen often, but it still did happen.
Yes and no. As I wrote it just totally look fake when it comes to sageuk, and that's because of the stardom system.
There is a difference between something realistic and something historically accurate. When you put a dragon in a movie, it's not historically accurate (or is it ? ^^), but good CGIs will make it realistic. There are a lot of historical productions, all over the world, where cross-dressing (wether men or women), can pass as realistic. But I have never seen one in a sageuk. If at least they really tried to pass them for young men, but they only put a sangtu with a manggeon, a gat and a man hanbok on them, while they remain pretty with make-up, very feminine, with women voice, so I don't see how anybody can believe they pass as men, even androgynous. Thus it makes everything false apart, because the other characters look very dumb believing they really are men.
As for the authenticity of cross-dressing women during Joseon, I never read any scientifical paper about that proving it (if you have references please let me know), and it's actually hardly believable, especially because of Confucianism and the society of Joseon era. Dressing as a man to travel, why not, but in everyday life, while having a work or official status like they do in sageuk ? Nope, I don't buy that unless proven. I think it's just a convenient trope sageuk writers found to not lock female characters in queens, concubines, court ladies, wives, etc roles.