Re: Amok Time doesn't make sense.
According to "Court Martial", his specialty is space psychology - a very useful skill to have on a five-year mission, and probably it makes him a good choice for Starfleet to replace the Piper/Dehner combo. Perhaps such concerns outweighed the need to care for Spock's well-being?
They say he's an expert, not that it's his specialty. McCoy actually downplays that by saying he knows something about it. If it was his specialty I don't think he'd do that. Wouldn't Dr. Noel be aboard at this time or did she leave after Dagger of the Mind
The boring one, the one with Khan, the one where Spock returns, the one with whales, the dumb one, the last one, the one with Kirk, the one with the Borg, the stupid one, the bad one, the new one, the other one with Khan.