What is going on here!?

...five seconds ago. I, and the me in front of me, gaped in shock. "I wish I knew what wish I made prevented me from learning what was going on." Nothing happened, again, but the other me disappeared, and I had the strangest sensation of having another set of memories. Then I realized; my wish couldn't be undone, so even though it hadn't been made, it still occurred. How on Earth was *I* the first user!? What wish had I made!? Then, I realized... The radically different world... Karyn's personality changing... That WASN'T caused by just the one wish. It had been caused by ME. In the PAST. I was going to be a time traveler!