The Shining - The Final Picture

= The Shining - The Final Picture =
One of, if not the biggest questions asked by viewers of Stephen King's The Shining(1980), have to do with the final shot of the movie, depicting a photo of the 1921 July 4th Ball at the Overlook Hotel with Jack Torrence front and centerThe Shining Ending Explained: Why Jack Is In The Photo https://screenrant.com/shining-movie-ending-meaning-photo-book-explained/
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The story of The Shining occurs during 1975, and focuses on Jack, Wendy, and Danny Torrence becoming the caretakers of and living in the Overlook Hotel over the off season from October to April. Throughout the movie there are multiple references to pieces of knowledge which characters by all logical means should not be aware of, primarily seen in characters with the eponymous shining. While primarily occurring with Dick Halloran and Danny Torrence, there are multiple occasions where this occurs with Jack Torrence, such as the scene in the Torrence's apartment the first day after moving in, the scene in which Jack observes the maze model with Wendy and Danny inside, the scenes in the Gold ballroom with Lloyd, as well as the scene in the bathroom with Delbert Grady. 
Speaking of Delbert Grady, early on in the film, we see Stuart Ullman explain to Jack about the previous caretaker of the Overlook Hotel, Grady, who suffered a complete mental breakdown and ended up killing his wife and children and then himself, much akin to Jack's eventual breakdown and death. However, this Grady is not the same Grady as we see later on in the movie in the scene in the red bathroom and the scene with Jack in the fridge. The caretaker Grady is Charles Grady, who is exclusive to the film, while the waiter Grady is Delbert Grady, who appears in the novel. Coincidentally, Grady is not the only character in the film with 2 separate appearances, with the other one being Jack Torrence himself. In the scene in which the Torrence's tour the Hotels Colorado lounge, Jack notices a figure located in the background of the scene cleaning a bookshelf. This individual just so happens to have the same outfit which Jack wears from the scene where he's having a nightmare at his typewriter until the end of the film(speculated to be the point at which the film shifts from reality to possibly Jack's in-universe storyboard), the same jeans and maroon jacket(insert screen grab of the doppelganger on the actual page). 
There may in fact be another reason for this phenomenon which would explain Jack appearing in both the the current period of 1975 as well as in 1921, that being the delusional disorder referred to as Reductive Paramnesia
# 7 Confabulations in extrapersonal space: reduplicative paramnesia, Bartolomeo et al., 2017 https://www.sciencedirect.com/topics/psychology/reduplicative-paramnesia#:~:text=Reduplicative%20paramnesia%20is%20the%20delusional,the%20original%20one%2C%20but%20displaced
. This disorder primarily occurs in patients who have experienced severe head trauma, often to the right cerebral hemisphere and both frontal lobes. This leads to the false idea that a person, place, or thing has actually been duplicated and exists in two places simultaneously. This may also explain all of what seem to be continuity errors seen throughout the film (especially considering how particular of a director Stanley Kubrick is known to be), such as the change in the color of the typewriter, the seemingly impossible layout of the hotel, and the idea of the two separate Grady's. 
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