You should always have a question ready to ask in the event that a mysterious stranger emerges from the shadows and claims to be you, returned from the future. This needs to be something you remember clearly but have never told anyone. For example, mine is the memory of a shower curtain with roller skating bananas from my house in second grade (details altered to protect my time traveling authentication credentials). Theoretically, your future self should be able to volunteer this information without... read more
