I should have realized that suffocating together on the Bridge would create heroic camaraderie among you. But it is quite a different thing to watch it happening to someone else. Engage the viewing screen. I’m sure you recognize your medical decompression chamber here, Doctor, and the meaning of that indicator. Your Captain will die. If you join me, Mister Spock, I will save his life.
So in Space Seed, Spock finds it illogical to grudgingly admire Khan’s superhuman leadership and magnetism while being against his actions…in A Taste of Armageddon, the very next episode, Spock is confronted with the most logical, computerized of wars…and perhaps truly gets what it means to understand, but not approve.