My theory is that Ford was the one who was striving for sentience in the hosts and it ended up with the incident that happened 30 years ago which claimed the life of Arnold.

Barry's Flash costume was designed by Cisco. Maybe Zoom's Costume was designed by Earth-2's Cisco.

Unless, of course, Big Head actually stumbles upon a good idea.

Agent McBeary DownTheStreet

I'm not sure why Time Travel or Suspended Animation didn't occur to Rebecca to explain how Melanie is alive and the same age she was 25 years ago. Her skepticism is too close minded. Surely a good science person would try to find logical reasons to why the others believe the dome talks to them. Like maybe the dome is…