system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do people writing biographies recall their lives in such detail. I barely remember my childhood just bits and pieces here and there. But nothing close to writing a book.
gpt
Most autobiographies will have a ghost writer who "helps" with the writing. Part of that will be interviews to help jog the person's memories together with interviews with others who knew them at that time. And if all else fails they can make something up that is in keeping with the image they wish to convey.