Traversed to the Ark of Tomorrow, but was a traveler

As the title, but I will try my best to revise what I wrote before, depending on the situation... I hope my previous speculation is not too wrong.

The reasons are as follows;

From a doctor looking at the official news with a magnifying glass:

"Preservation" and supporting facilities are one of the means for human beings to avoid "observers" and continue human blood.

Through this large cryogenic management facility, a considerable number of human beings have entered a dormant state, avoiding the observation of "observers", waiting for the day when human civilization will be reborn.Prior to this, the entire facility was managed by "preservators". (Half-artificial intelligence, half-human consciousness, because of fear that a single artificial intelligence will be hijacked by "observers", and "preservators" are not artificial intelligence in the usual sense)

1. There is more than one "sarcophagus" -- there are many "doctors" alive -- Prises may survive.

2. Kelsey is an advanced artificial intelligence, which can explain her extremely long lifespan and omniscient personality.

3. Terra is assumed to be a calculus sandbox, and it is influenced by higher-level civilizations.