Quote Originally Posted by Supersnow845 View Post
The endless are 100% implied to have sapience because an AI program created to eternally preserve a persons memories would be unable to take steps towards ending its own existence. Cauchia is definitive proof the endless have a degree of agency

The endless (via cauchia, Otis, krile’s parents and the proposal NPC) are all fully aware they are endless and understand how their programming works but also have shown to act beyond it, particularly the proposal NPC who states he has been spat out by the system before and never made a move for his finance but chose to do it this time because he is unsure of how long the existence of the endless can last (a common thread amongst the endless in that they understand that their existence isn’t forever), in that scene he breaks out of the implied temporal lock that exists amongst the endless. The NPC that makes the game for you in yesterland and changes his age when he realises that his childhood form doesn’t make him happiest is another example

The endless may not be human but they are 100% sapient, they aren’t the people they were based on, they are different entities that use the memories of the deceased Alexandrians as a foundation
Yep, Cahciua calls the Endless a facsimile. A facsimile is an exact copy of the original. It's equivalent to a clone and in this case, the clone is fully sentient. The only difference is how they store the memories. You can just think of the terminals as a specialized version of the Soul Vessel the scions used at that point.

Sphene herself is sentient but probably the only exception to the Endless being different since she was created by Preservation to keep the Endless going no matter what cost (so she's the only one where her existence has been tampered with after transferring the memories over, hence her ego telling us to stop her when she makes a choice she doesn't have control over in the flashback before Trial 3). Everyone else though, they're real people and treated as such. Even Constancy mentions how they have taken great effort to maintain the integrity of the memories, so it will feel no different from when they were flesh and blood.