Question about a scene in Space Seed
In the classic TOS episode "Space Seed," Khan has taken over the ship and is addressing the crew. They all resist. Then the following exchange happens (emphasis mine):
KHAN: I see now I made one serious error. You are the Communications Officer? Engage the viewing screen, please.
(Uhura doesn't move, so Joaquin drags her to the table, then hits her. As he raises his hand again, Marla intervenes.)
MARLA: No!
KHAN: I should have realized that suffocating together on the Bridge would create heroic camaraderie among you. But it is quite a different thing to watch it happening to someone else. Engage the viewing screen. [The screen turns on.] I'm sure you recognize your medical decompression chamber here, Doctor.
The second time Khan says, "Engage the viewing screen," he's not addressing Uhura, but one of his own people, and the screen turns on. So... why did he ask Uhura if he already knew how to do it? Was this meant as a power play, just to try to break her? Or is it a mistake in the script?