Question: In this episode who are the hippies, and why are they so important? Their names were Michael & Jennifer, and when the team are going back to the future the hippies wanted to go also, but Jack started to tell them something and then stopped. I just want to know if they are someone from future episodes or something.
Chosen answer: Michael and Jennifer have never showed up past this episode. SG-1 led them to believe (with the help of a Zat gun) that they are aliens, they never told them they were actually from the future. They were simply a couple of nice people willing to help.
Question: I know in this episode SG-1 encounters the younger Hammond. Are Michael and Jenny supposed to be younger versions of people SG-1 knows in their present? Or were they just a random couple that helped them out?
Answer: They were just a friendly couple that helped them out.
Answer: Carter explained it in the episode. For a brief moment, they were present in both time periods, which allowed for the Stargate to be there for them to step out of. Agreed, it does make more sense for the Stargate's unstable vortex to punch through its packing crate, but then you wouldn't end up with the hilarious "I'm Luke Skywalker" scene.