My best guess would be if two or more people came from the same world and seemed to be plucked out of different points in time.
As an example... let's say that Kaveh and I didn't have memories that lined up with each other's. Let's say the last thing Kaveh remembered was the Interdarshan Championship, but the last thing I remembered was the Sabzeruz Festival.
Since we would both be here, it would be an undeniable fact that we both died. However, if Kaveh remembered me being alive during the Interdarshan Championship, that would be a contradiction. Our timelines would not be able to coexist, because in order for the me that only remembers up until the Sabzeruz Festival to be here, she would have died before any of that happened. But for Kaveh to remember me being alive and well would mean that our timelines would have separated.
It's only an example, though. I do remember the Interdarshan Championship.
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As an example... let's say that Kaveh and I didn't have memories that lined up with each other's. Let's say the last thing Kaveh remembered was the Interdarshan Championship, but the last thing I remembered was the Sabzeruz Festival.
Since we would both be here, it would be an undeniable fact that we both died. However, if Kaveh remembered me being alive during the Interdarshan Championship, that would be a contradiction. Our timelines would not be able to coexist, because in order for the me that only remembers up until the Sabzeruz Festival to be here, she would have died before any of that happened. But for Kaveh to remember me being alive and well would mean that our timelines would have separated.
It's only an example, though. I do remember the Interdarshan Championship.