That is why you restrain yourself and limit the choices to those that affect you and your party. Not every multiple-path should have earth-changing consequences, or any of them really, if you want to have a true reactive world. That way you can better control the design and outcomes of actions without retconning or introducing plot holes. MrBTongue's video, which Madscientist posted, explains this very well. (I'm familiar with his work in general). I.e. Manage the scale.