The Doppelgänger Phenomenon

 https://www.reddit.com/r/Glitch_in_the_Matrix/comments/1uqg95c/doppleganger/ 

https://medium.com/illumination/the-doppelg%C3%A4nger-phenomenon-9ed11ff3257e 

https://www.smithsonianmag.com/smart-news/doppelgangers-dont-just-look-alike-they-also-share-dna-180980635/

https://en.wikipedia.org/wiki/Doppelg%C3%A4nger 

https://www.hollywoodreporter.com/lists/celebrity-lookalikes-doppelgangers/ 

https://www.reddit.com/r/horror/comments/11vec6t/want_to_know_more_about_doppelg%C3%A4ngers/ 

https://en.wikipedia.org/wiki/Mythology_of_Fringe#Doppelg%C3%A4ngers  

https://thedigitallabyrinth.blogspot.com/search?q=Digital+Doppelgangers 

https://thedigitallabyrinth.blogspot.com/search?q=Glitch+in+the+Matrix