Where have I stated this is a unversal thing? I have clearly told people, this is just one approach, but it is a really common one among sandbox gamers. Believe me, if this thread were involving a high volume of OSR sandbox gamers, you'd be getting tons and tons of push back on the brother. I am sure they would also have other differing opinions, because sandbox isn't a monochrome style of play. But this expectaiton that the GM would govern the state of the brother, I think in your typical sandbox, that would be the norm.
Okay, it seemed as if you were asserting here that your overall discussion in terms of the dead brother issue was universally held by sandbox gamers:
Because in a game like this, getting that specific about the types of outcomes that unfold in play for things that have yet to happen (i.e. finding your brother and having a relationship with him) is not considered a reasonable choice. The choices that matter for agency in this style (and this is pretty universal among sandbox gamers) is the choices you make within the setting. Choosing to look for your lost brother is such a choice. And if the GM suddenly thwarts all your efforts to find him, then that would be a kind of railroad or a violation of agency.
So you are then talking strictly about in-setting choices from the perspective of the character?
Also, keep in mind, it does seem that for some people that the GM unilaterally declaring the brother as dead in advance would be the GM thwarting the efforts of the PC to find their brother. It comes across as a story railroad where the GM has declared that it would be more interesting for the PC if the brother was dead. So the story is less emergent as the GM has ascribed a fixed outcome or result of the search. But that predetermined outcome may very well be psychologically unrewarding or hostile for the player who controls that character.
No, we've established there are two ways agency is being handled in this thread. Folks on your side, simply keep asserting your view on agency is right, and failing to acknowledge our approach is a totally viable way to see and use agency. But you keep turning it into a zero sum game (which it isn't).
I wouldn't call it establishing anything. I would call it entertaining two separate definitions of agency so we can even hold a conversation, not to mention having to deal with only one definition of railroad.
Seriously, if you won't even allow us to accurately describe our own playstyle, then who is really engaging in one true wayism here?
You're welcome to accurately describe your own playstyle, but that doesn't absolve it from external judgment. Certainly no more than other playstyles have been repeatedly judged and commented upon. So maybe you can please put down the veiled accusations of "one true wayism" and hold a conversation without resorting to these sort of rhetorical tricks. There's really no need for that.
But that existing, doesn't somehow make it a problem for people to continue to run games where the GM has control over the fate of the brother.
I still don't think that is always true even in your style of sandbox gaming as you make it out to be. I still think that there would be people who would have a problem with it if they encountered this, potentially myself included. I am not discounting here that there would be players and GMs who are fine with this, but let's not pretend that every player would be happy with this sort of forced outcome of their play agenda for their character.
But I think it is fair to talk about what the typical sandbox looks like without this kind of hostile, angry reaction.
I think it's unfair to describe any pushback as a "hostile, angry reaction".
Except we are talking about different areas of the gaming community. There is an OSR and sandbox community. And yes that varies. But I think you can speak generally. Normally I would be only focused on my own style. But when you have a whole thread of posters attacking you because you think a GM deciding the brother is dead would be okay in a sandbox, it is relevant to share your view on what the norm among sandbox players seems to be. Now I could be wrong about that norm. It is always possible to be wrong. But I don't think I am, and I think at the very least, this is a style you see frequently among sandbox players, if not most of the time. That doesn't make it more right as a sandbox. But it does mean, people familiar with sandbox wouldn't be as shocked or surprised by my assertion as the posters here are (and again, I think that is relevant).
And maybe stop using overly charged language like this too? Thanks.