
S4 E5 Julie and Randall have progressed with storywalking more than we know somewhere between E4 and 5. They know MIY is watching/ eavesdropping and their bickering is for show
One theory I developed while watching this latest episode is that Julie has already story walked to the point where she sees MIY become Sophia off-screen (they’ll reveal this when the time is right) and her and Randall bickering at the clinic where Sophia is lurking and pleased at the infighting is all for show. They were almost projecting their voices like they wanted to be heard. Like stage actors would in a play.
I believe Julie has already heard the MIY speech, which means she knows his MO is to have the town tear themselves apart. Because we’re dealing with timey-wimey stuff, it’s not impossible that she’s jumped around a bit between last episode and the 5th. I believe chess and game theory is a major theme throughout the series and team julie and randall are three steps ahead of MIY/sophia.
As far as we know MIY knew he’s been made as MIY by Julie, he just doesn’t know if she’s already obtained that info via storywalking in the present timeline. But regardless she will have eventually, which is why he had to change facades. What he may not know however, is that he has also been made as Sophia. But Julie has advanced, which means she was able to be more discrete by the time she witnesses the shapeshifting chapter. I believe she uses Sophia’s old glasses (which they have made a point for her to swap out in the storage room) and storywalked to the point at which he shapeshifted.
* I just don’t think Sophia abandoning her broken glasses isn’t going to serve Julie’s story walking in some way. That was Sophia’s blunder. Now Julie has her bookmark (Sophia’s chapter).
One observation I had that I found odd, is that we’ve never been shown the theatre stage before, at least not so intentionally. I think the reason they were arguing in front of what looked like some sort of Halloween themed high school theatre production is because they knew MIY/sophia was observing and they were PERFORMING.