Thomas Shey
Legend
The thinking is that you tell the GM what you want to do and the GM tells you what happens. In the context of Braunstein and its descendants, the world and the characters are pretty realistic so there isn't a lot of confusion about what's possible or reasonable. That doesn't need to be true, of course. You could do that style with something fantastical but well established and shared among the participants, like Hogwarts or Star Wars.
I had to resist laughing at "what's possible or reasonable". I've seen too many cases in modern games of people thinking they understood how things worked vastly more than they did (including in a couple of cases, me). This can be about something as simple as climbing things.