"You mean, in relation to the existence of god?" she asked. "Of course you do," she answered her own question.

We were somewhere in Texas, I think. At night, when there's nothing but the road and it goes on for miles and miles and miles, you kind of forget where you're at anyway. It all looks the same as the pavement rolls by underneath the constant hum of the wheels, the drone of the engine set on cruise control.

"Well, I’ve thought about it, too, and I guess it does kind of present a dilemma of sorts," she continued. 

"Totally," I agreed. "I mean, what's to say that my entire life's not fated and set out, even if I don't know what's going to happen next, you can theoretically tell me all of it by traveling into the future, right?"

"Theoretically, I could do that."

"So what decisions, actions, and events in my life are really under my control? What if something bad happens, and you came back and told me about it? Why wouldn't I be able to stop it?"

"I guess that it kind of comes down to an ethical decision on the part of the person with the knowledge of the future, doesn't it?" she said. "Sure, I could know in advance of some certain events in your life, but by telling you about them, would you really be able to keep them from happening?"

"Then let's consider it on a level beyond just that of one individual. What if you could stop a war?" I was playing devil's advocate a little bit, bringing up timeless standpoints and situations just for the sake of the argument.

^overlap