One of the trickiest things to understands is how memory works for hosts. Prior to Ford adding Arnold’s reveries, the hosts essentially only had short term memory. They would normally be wiped during maintenance cycles and set back on their loops.
After the reveries are added, hosts are able to access memories even after a wipe. They start experiencing difficulty with memory when they can’t distinguish it from reality. Felix tells Maeve that memory is different for hosts (S1 Ep8 10m). Humans have imperfect and fuzzy recall. Because the hosts have perfect recall, memories feel like reliving the event.
As the hosts experience further degradation and fragmentation, some of them learn to control their memories, and can interact with them like a lucid dream. Dolores, Maeve, and Bernard all exhibit control over their memories.
When park employees work with hosts, they are put into a fugue-state where their software is exposed. They can be examined, interrogated, modified, and repaired in this mode. It is very much like how a human would act if hypnotized. When asked, hosts describe it as a dream. This is an important metaphor to remember in a story where dreams, night, and unconsciousness are all linked. Humans turn host consciousness off in this diagnostic mode.
There are two types of hosts because the technology improved over time, at least partially to increase cost efficiency. Thy are referred to as generation one and generation two. It seems that either generation can contain a bicameral mind.
Generation one hosts seen in Logan and William’s time in the park. If you cut them open or dismember them, you can see robotic parts and wires. Dolores is the prototype generation one host, and in episode one, Stubbs tells a female tech that Dolores is the oldest host in the park. In the schematic illustration, you can see machine parts in the diagram. In the present day, Bernard discovers the generation one family living in the remote house. Young Robert is, evidently, also some kind of prototype.
Generation two hosts are the flesh and blood version, rendered on the loop, in the present day timeline when The Man in Black has returned. In the “Bernard” schematic, we see muscles and organs instead of machine parts. Felix tells Maeve that second generation hosts are nearly the same as humans. They’re also close enough to us to be susceptible to the same ailments we are. In one scene, Felix and Sylvester clean MRSA out of Maeve’s abdomen.
In one scene, a host is shown coloring in, sanguination.
The show’s creators adapted this from an older idea that primitive man interpreted his thoughts as the voice of god. In the show’s fiction, the important thing to remember is that the host hears Arnold’s voice whispering to them. Describing the Bicameral Mind, Ford recalls, “He wanted to create consciousness. See, Arnold built a version of their cognition in which the hosts heard their programming as an inner monologue. As a way to bootstrap consciousness. The hosts malfunctions were colorful. ”
This is a wonderfully complex rabbit hole that you can dive down in order to receive some fundamental understanding of how one of the core concepts of WestWord works. It was primarily pioneered by Julian Jaynes, who wrote the book “The Origin of Consciousness in the Breakdown of the Bicameral Mind” … this book mentions reveries on the very first page.
From which, another redditor pulled this:
“It all began in what seemed in my personal narritizations as an individual choice of a problem with which I have had an intense involvement for most of my life: the problem of the nature and origin of all this invisible country of touchless rememberings and unshowable reveries, this introcosm that is more myself than anything I can find in any mirror.
Pg 446 OCBBM 1976 J. Jaynes”