Level Up & OSR Enthusiast
Because its all set up ahead of time. I don't decide in the moment that the orcs are in whatever direction tbe PC decides to go. I decide where the orcs are, provide access to information that can lead the PC to the orcs, but run based on whatever is in the direction the PC actually decides to go. If that's to the orcs, great! If that's to the goblins, great! It's up to them where they go, but its up to me before they make that decision what is in that direction.It's not. But if both are equally (un)realistic, why not frame the situation that speaks to the PC's dramatic need?
Conversely, if there's no plan to do that, then why bother having players establish such things for their PCs?