When using the Cookie to train the AI, Matt has a portable translucent touchscreen by which he controls some of virtual Greta’s environment. (Sharp-eyed viewers of the show will note this translucent panel is the same one he uses at home in his revolting virtual wingman hobby, but the interface is completely different.)
The left side of the screen shows a hamburger menu, the Set Time control, a head, some gears, a star, and a bulleted list. (They’re unlabeled.) The main part of the screen is a scrolling stack of controls including Simulated Body, Control System, and Time Adjustment. Each has an large icon, a header with “Full screen” to the right, a subheader, and a time indicator. This could be redesigned to be much more compact and context-rich for expert users like Matt. It’s seen for maybe half a second, though, and it’s not the new, interesting thing, so we’ll skip it.
The right side of the screen has a stack of Smartelligence logos which are alternately used for confirmation and to put the interface to sleep.
When virtual Greta first freaks out about her circumstance and begins to scream in existential terror, Matt reaches to the panel and mutes her. (To put a fine point on it: He’s a charming monster.) In this mode she cannot make a sound, but can hear him just fine. We do not see the interface he uses to enact this. He uses it to assert conversational control over her. Later he reaches out to the same interface to unmute her.
The control he touches is the one on his panel with a head and some gears reversed out of it. The icon doesn’t make sense for that. The animation showing the unmuting shows it flipping from right to left, so does provide a bit of feedback for Matt, but it should be a more fitting icon and be labeled.