So in the movie as it was filmed, Spock is sitting at his bridge station in the middle of a crisis moment -- turns aside with a thoughtful expression -- and leaves the bridge to head straight down to Engineering to perform the necessary repair to save the ship. (As a consequence, receiving enough radiation damage to kill him.)
It was a brilliant scene, expertly filmed and acted, and in the decades since then it's gone down as one of the best dramatic scenes in all of film history (not just from Star Trek, but in all cinema.) And I know the real-world reasons as well: rumor says that Nimoy only agreed to do the film at all if Spock would get a good death scene (thereby releasing Nimoy from any future obligations.)
But then again, why did it *have* to be Spock to perform that specific repair? Yeah, he's a smart guy, but he's not an Engineer. That thoughtful look tells me that maybe he's the only person who knows what the solution is? If so, time is of the essence; why not just push a button to tell Scotty instead of taking the time to go down to Engineering himself? (I'm thinking: Counselor Troi on TNG passed her command test by ordering holographic-LaForge to complete a specific repair, with full knowledge that the action would cost LaForge's life.)
My only other thought is related to the apparently hot-and-fiery chamber where the repairs were performed. As a Vulcan, perhaps he was the only crewmember with a high enough pain threshold to actually do the work that the moment required (or mental discipline enough to ignore the pain while he needed to.)
Has there ever been any other in-story explanation about why it had to be Spock, rather than Scotty or some other nameless engineer flunky?
It was a brilliant scene, expertly filmed and acted, and in the decades since then it's gone down as one of the best dramatic scenes in all of film history (not just from Star Trek, but in all cinema.) And I know the real-world reasons as well: rumor says that Nimoy only agreed to do the film at all if Spock would get a good death scene (thereby releasing Nimoy from any future obligations.)
But then again, why did it *have* to be Spock to perform that specific repair? Yeah, he's a smart guy, but he's not an Engineer. That thoughtful look tells me that maybe he's the only person who knows what the solution is? If so, time is of the essence; why not just push a button to tell Scotty instead of taking the time to go down to Engineering himself? (I'm thinking: Counselor Troi on TNG passed her command test by ordering holographic-LaForge to complete a specific repair, with full knowledge that the action would cost LaForge's life.)
My only other thought is related to the apparently hot-and-fiery chamber where the repairs were performed. As a Vulcan, perhaps he was the only crewmember with a high enough pain threshold to actually do the work that the moment required (or mental discipline enough to ignore the pain while he needed to.)
Has there ever been any other in-story explanation about why it had to be Spock, rather than Scotty or some other nameless engineer flunky?