Factual error: When Raban meets the Baron Harkonnen in Harkonnen's bath, the water reaches nearly the top of the bath. As Harkonnen's large body descends into the liquid, the level of the liquid does not rise, in contradiction to Archimedes' principle. (00:46:37)
Continuity mistake: When Jessica kills the sniper with the rock at the beginning, the sniper's body is lying dead on the ridge. When she shuffles down the dune to speak to Paul, mere seconds later, the sniper's body is no longer there. (00:09:04)
Answer: Feyd uses Paul's blade to stab Paul in the left abdomen. Then Feyd uses the emperor's blade to stab Paul in the right shoulder. Paul then pulls out his own blade from his own lower left abdomen to kill Feyd, leaving the emperor's blade in Paul's right shoulder.
Thanks so much! I think that I got it! Have a terrific day.
Erik M.