1. His obsession with Dr. Ford's "reverie" updates
In the latest host upgrade, Dr. Ford snuck in a new function: "reveries," a set of movements the hosts make that are tied to specific memories (or, for robots, traces of past programming). When Bernard explains this to his assistant, she's reasonably confused; Westworld employees are supposed to purge host memories at the end of every narrative loop -- i.e., every day. Bernard suggests that past programming is still in there somewhere "waiting to be overwritten," and that Ford found a way to access them "like a subconscious." He goes on, in a voice filled with awe: "It's the tiny things that make them seem real."
Unfortunately, the "reveries" are the source of Westworld's current malfunctions, a point Bernard reluctantly brings up with Dr. Ford, who then treats him to one of his patented speeches that puts a finger on the thesis of the show. Ford explains that humans have peaked, because we've been able to fix all natural "mistakes" and "slip evolution's leash." The next natural step, he says, is for us to be able to eventually "resurrect the dead." But, Ford says, Bernard must indulge him "the occasional mistake." Upon hearing this, Bernard smiles warmly and walks off.