Have you ever wished that you could go back in time? Perhaps you made a mistake and immediately wished you could
ctrl+z and take a step back. Perhaps you were reflecting on an event that happened a few months ago, and you wished you did something differently.
I remember watching a movie many, many years back. During one scene in a forest, the main character made a promise that if time travel was possible in the future, he would appear right next to himself, right here, right now, just to prove that it was possible. And he closed his eyes. When he reopened them, he was still alone. That scene stuck with me for a really long time. I then tried something similar out of boredom and sheer curiosity. Alas, I didn't appear next to myself either. But since then, I've always paid particular attention to times I wished I could go back in time.