Sheppard: If I'm in the future, that means you're, uh ...
Holo-McKay: ... dead. Dead and buried and turned to dust a long, long time ago, along with everyone you ever knew. There's no way of knowing what the state of human civilization is; whether it even still exists. I mean, we've obviously abandoned the city.
Holo-McKay: There's not enough power for you to gate back to Earth, and without a M.A.L.P., going anywhere else would be far too risky. It is entirely possible that you are the last human being alive.
Sheppard: You're not doing a very good job of cheering me up here.