Nicola Staff asked 4 years ago
This scenario is not the case and not needed because the person who has been injured, when taken back in time, will be in the healthy body they enjoyed in that prior time, but their consciousness has been altered by being in the future and so they will retain a memory of the future experiences even though they have gone back to a prior time and the events technically have not occurred yet from the perspective of their life at that point. If you think about this, you can see that time travel would have no benefits if this were not the case. Going into the future to learn something would be immediately undone if going to the past erased any awareness of what took place. So the issue of who experiences and retains memory of what, will depend on what one knows and what one does not know.
When the timeline of something is changed, those who were aware of an occurrence that becomes undone by going back in time to change the circumstances and forestall the occurrence, those never having an awareness of the original incident will never know the difference and will not conceive of its happening in any way. Whereas those who experience its occurrence will retain a memory of this. And so going back in time and redoing it will leave two groups of people—one who will never have a memory because from their perspective it never happens, whereas some have seen it happen once and will have an inner knowing that it took place.
This can be suppressed and is not a prominent awareness. If they are not a direct experiencer of the event, it becomes then just something they can connect to as a kind of fragmentary knowing and this is often subsumed by a reworking through the mind, in the case of events that take place and affect very large numbers or almost universal awareness of the populace, such as the Kennedy assassination and the 9/11 attack.
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