|Kirk explains to Nomad that in the 23rd Century Pluto is still a planet.|
|What the heck is a "Coupler Prediction Scanner"?|
Uhrua gets re-educated by Nurse Chapel ("She'll be back on the job within a week.") and Spock mind melds with Nomad. He learns Nomad's back story and its current mission--sterilize imperfections--which proves to be so interesting that Kirk and Spock need to talk about it while Nomad stays under the watchful care of two Red Shirts. What could go wrong?
Nomad then tries to improve the efficiency of the Enterprise, pushing their speed past warp 10 (yet, strangely, no one devolves into salamanders) before Kirk calls it off. As he does so, Kirk confesses that he, himself, is a biological unit. Not a good move. Nomad says, "There is much to be considered before I return to launch point. I must re-evaluate." Yeah, Nomad wants to head home where it will find Earth infested with imperfect biological units. That's a problem. Stalling for time, Kirk again tells Nomad to wait with two Red Shirts.
All-in-all, The Changeling is a fun episode as long as one doesn't look too closely. Yes, it is another in the series of Kirk vs. Computer episodes, but the many of the basic plot points were evidently good enough to be lifted for Star Trek: The Motion Picture (but that's another story).
There was no new music written for this episode. So, instead, you should totally check out this song by the band Five Year Mission:
Next up, The Apple.