After that moment, I couldn’t trust my own memory anymore. My family searched the house but found no sign of the postcard. The mailbox logs showed nothing unusual at the time, and there was no stamp record matching that date either.

Everything pointed to one simple conclusion: the postcard had never existed physically. But I still remembered holding it clearly in my hands, as if the experience had been fully real. Every detail of the handwriting felt burned into my memory.

Years later, I still think about what I experienced that day, and whether it was a memory error or something more unexplained. Experts often call this false memory or suggestion effects, but that explanation never fully satisfied me emotionally.

Because I didn’t just “think” I saw it—I remember reading it line by line. Even my mother’s reaction made no sense at the time, as she reacted instantly as if I had seen something impossible.

To this day, I still cannot explain what happened. I still wonder if something briefly crossed into my reality and left just as quickly. What makes it disturbing is not the postcard itself, but the certainty that something felt real enough to rewrite my memory.

It is the kind of experience that lingers not because it can be proven, but because it cannot be fully dismissed.