Stargate SG-11997

Samantha Carter:
Daniel, when you were in this alternate reality, were there differences?

Dr. Daniel Jackson:
Yes. Uh, Teal'c was leading the attack on Earth, I wasn't even part of the program, you and Jack were engaged to be married...

Jack O'Neill:
Excuse me?

Samantha Carter:
What... okay, uh, even if you did actually experience this alternate reality, doesn't the very fact that there were differences mean that we won't face the same fate?

Dr. Daniel Jackson:
Yes. But the defining event, the death of Ra, took place in both worlds.

Teal'c:
An attack of retribution.

Dr. Daniel Jackson:
Yes. And the same thing is gonna happen here unless we stop it.

Jack O'Neill:
All right. Wait a minute. Let - let me get something straight here. Engaged?

Samantha Carter:
It is theoretically possible.

Jack O'Neill:
It's against regulations.

Samantha Carter:
I'm talking physics, sir.