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For the reader, a person with amnesia caused by a brain injury suddenly regaining full awareness can seem like a deus-ex-machina trope. From what I understand, as the brain recovers, this person ca...
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#3: Attribution notice added
Source: https://writers.stackexchange.com/a/20350 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
For the reader, a person with amnesia caused by a brain injury suddenly regaining full awareness can seem like a deus-ex-machina trope. From what I understand, as the brain recovers, this person can regain partial awareness of the past, in bits and pieces. In fiction, you can use this device to give readers clues about an unknown moment in the past so they can enjoy solving the mystery along with (or a little ahead of) the protagonist. If your reader knows the about the moment, you can create tension about the timing of the awarenesses and how it might change the protagonist's responses to events.