Picture this: you’re driving from one end of the United States to the other. You’ve been driving for a while, so you’re a long way from where you started and everything around you is unfamiliar. Let’s imagine, too, that for some reason, you aren’t able to drive on the major highways, so you’re slowly making your way along backroads. It’s been hours and hours since you last saw a sign telling you where you are. You’ve stopped to get gas, and you’re wondering if it’s even worth the effort to keep going. It’s late; you’re tired, and you’re not even certain that you’re still on the right road. Maybe you should just give up.