Oh I see what you’re saying. We’re using different frameworks for time travel—I was assuming one which didn’t allow for different versions of any particular moment.
It's consistent for me to travel back in time and give past myself stock tips that I only have because I was given them by my relative future self in my relative past
Oh I see. We were talking about different problems: suppose Eve witnesses a verification, and sees that it works. She can’t now go back in time and do that verification because at that time we know Bob is talking to Alice, not Eve. That’s where the time dependence comes in. But you’re saying
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