However, reincarnation is literally true when understood correctly. Your causes, which are what you were, are called your past lives. Your effects, which are what you will become, are called your future lives. For example, a child is to some extent the future existence of the parent.
Q: Yes, I can see that much, but will I exist in a future existence? If a revolutionary thought occurs to me, a thought that has the potential to save the human race, and then I die before I can share it with others, will that thought be preserved intact, or will it be lost forever?
A: Can anything ever be truly lost? The forms of things are changing, hence utterly destroyed and reborn each instant. Forms change though the substance remains. Nothing can ever be truly created, as creation implies causelessness, which is an absurdity. Therefore a creative thought, such as you speak of, is an appearance only, and has necessarily existed since beginningless time.
Q: That doesn't satisfy me. You gave an example of how we live-on through others; but what if the entire human race dies out? How can we, and our consciousness survive when there are no longer any human beings!
A: I have already given you the reasoning; it is now a matter of faith - faith in the truth of reason. You are merely looking for a "truth" that satisfies your ego.
Even if the Universe itself should end, you and your thought cannot be touched. So I say, though empty space should cease, my vow will never end.