bobinator said:
I need to rewatch this scene again because I also thought he was saying they were brothers, which really threw me.
So, do we think "Arnold" is real?
Like, is Arnold either alive or someone is pretending to be him or something, OR, do we think Arnold is a consciousness inside the system? Like an Ultron, Genisys type thing?
My original thought is that Arnold is dead but programmed his consciousness into the minds of various hosts to keep what he wanted still alive.
I think this is key though:
Ford showed Bernard this picture and said it was Arnold. But we saw from this episode that is very clearly Ford's droid father -- and he had no idea who Arnold was.
But we also know that the droids are programmed not to see anything that doesn't "fit" with their reality. Which calls into question if Arnold really is in the picture, but Bernard just can't see him -- which also explains the very odd framing in the photo, which seems to have plenty of room for a 3rd person.
So my theory is that Bernard is a droid and he is made in the likeness of Arnold. Ford showed him the picture knowing he wouldn't be able to see the third person and would just assume it was the other person in the picture (which is why he asked "Are you Arnold?" to Ford's father).