[@KahleenCuthald]

You say that, but if asked to bark, would you? You'd probably carefully consider if the individual asking was important enough, as well as if barking will advance the order-er's opinion of you.

Which is just the case here. The order to sit was ridiculous and it offered the machine a way to show just how ridiculous it was for someone that blind. Regulation keeps people in line, but it also gets people killed if that's all they will follow.

If Rolands had spoken to Nexus and said: "There's a giant parasite attacking me, help me get this thing off!" Then Nexus would have absolutely followed orders and assisted its crew-mate in peril.

Edit: Without question.