Castaways and Cutouts

When you're lost and adrift, the only thing you can rely on is your reason and instincts. But if your instincts fail you, your reason gives no answers, and your faith has been sitting on the front steps for years, where do you turn to? Where do you place your trust?

How then do you experience the world? What if the world you perceive is merely a simulacrum, populated by castaways with nothing else to do and cutouts who pop up at appropriate times? And if you lose yourself in this theme park, how then do you differentiate between what is real and what isn't?

Does anyone have an idea? Because I don't.