Yesterday's Enterprise timeline
So we have the Enterprise C going into the future. Was that future an alternate timeline, or a prime timeline that was later corrected, so to speak, when the E-C went back into the past...or the timeline that it was supposed to be in. It always confused me as whether the timeline was an alternate timeline, or an altered prime timeline. So what about Guinan? Did she just know that something was wrong with the current timeline?
Darling, you remain as aesthetically pleasing as the first day we met. I believe I am the most fortunate sentient in this sector of the galaxy.