The mind of the subject will desperately struggle to create memories where none exist.
There are a million, million worlds, all different, all similar. Constants and variables. There’s always a lighthouse, a man, a city. Stars aren’t stars, they’re doors. Doors to everywhere. All that’s left is the choosing.
Why do you ask what when the delicious question is when? The only difference between past and present is semantics. Lives, lived, will live. Dies, died, will die. If we could perceive time as it really was, what reason would grammar professors have to get out of bed? All things exist across time. We can be both alive and dead, it is a matter of perception.
We don’t need to, situations will occur all the same. Because it does. Because it has. Because it will.