Only some unintended consequences are foreseeable, and none are predictable.
Better to work in a pattern of constant adjustment to what actually does happen than to invest much energy in trying to guess what will.
Considering scenarios and options is useful. It’s how we plan.
When I say “to invest much energy in trying to guess”, obviously the definition of “much” is contextual.. Where human life is at stake, nothing is too much. At some other extreme, any prediction is waste – just explore. And a spectrum between.