The pattern for those who have gone and then come back dictates that time waited. Those from our same worlds, universes, dimensions, but later in time are all likely to say that things happened as they should. We write our own stories, and to do so we are there for the times that matter.
Ah, a crash course, then. It must narrow it down some. If you were to go to the greenhouse and run into a woman, the odds would be at least somewhat in your favor that she was who you were looking for.