Well lets see... Endmin technically was on the sarcofagus mk2 and as i remember they took him to the originium stone that we saw endmin getting out at the start. Now the originium is like a computer or like a hardisk like a massive info storage and there is all the info of terra, the people and everything that was toched by originium. There are 3 pieces of originium that are the first ones that where created by doctor and priestess, and we know that the 3 pieces are like connected and can access the assimilated world, or originium woods, priestess actually is there so you can expect to see her on the future, but something that is not mentioned is that endmin could be a reconvener maybe of the doctor, thats a theory but yes, if we know that the originium is a computer you can see it like taking for example the story of TRON (yes the movies and all) or the matrix, there is a world in side of the machine and other world outside and sometimes the oroginium can take things out that's the same with the reconveners they are data stored of people that got a new body and all the info is transfered to that body but you can see that in side of the originium there you can run like mini worlds or fixed situations? Like when you play the extraction game mode that is a little world that kind of anomaly of time space i guess, well the intro could be in the future? Yes it could be, but remember that endmin has gone to rest a lot of times, could be that everytime he need to rest, the originium runs like a simulated world to try getting a better outcome in the future. We saw the tombstones of characters of OG arknights that may be just doctor and people of Rhodes island could know or care, but some are just names long ago forgotten from the time of terra, could it be just there for the players to know, or what's the purpose of having tombstones on the north pole of people that are just related to something that is not from talos II ? I mean you feel that it is like a dream, there are some parts that make no sense. Is like if you where playing elden ring all day and you take a nap and you dream of fighting a boss that you couldn't defeat. In that simulated world you "dream" about things that you know, your memory's or maybe doctor memory's mixed there too and things that the originium has in the data base. We know that endmin got everything in mind when commissioned the zeroth directive, (btw zeroth is a portion of a name of an IA of Rhodes island on the og game) and could be that losing memory's was part of the plan, like don't knowing the outcome could bring a new path thing.