When Luke is hiding from Vader while he’s speaking to him saying “If you will not turn to the dark side…”, he’s holding another unlit lightsaber in his left hand (supposedly meant to be Luke’s that he threw at Vader to show that he won’t fight him).
Interesting! But in this scene, Luke hasn’t thrown his saber away yet. Certainly looks like his though. Really interesting!
I’m quite sure it [robot torture scene] was intended to be funny. And I’m quite sure it fell flat.
Yep. That robots can feel pain is established in ESB (3PO hits his head and R2 burns 3PO’s foot), but the torture scene is just terrible.
Whether it’s supposed to establish comedy or drama, it fails either way.