Oliver
If she decides that she wants to stay here then I'll point you to her so she can talk to you about that. So far from what I see every single person who is experiencing this thinks that it's real.
You don't think Thea is WE obviously aren't part of this experiment, but I'm not sure how many others aren't. I keep waiting for Will to pop up, but I haven't seen anything from him. I don't think anybody has spotted him either.