This should have been a fuckin' episode.
Like, really. At this point I'm kinda' getting mad at CBS, because these shorts aren't some filler - They are full fledged episodes, that got shafted. Each of these so far had an intriguing, unique concept about the main characters, and each episode suffered from it's short runtime, and that such crucial things happening where so underdeveloped and cut short.
The same holds true for this episode: It's MUCH better than almost everything we saw on the regular show on S1 so far. It feels so, so much more like Star Trek. It offers unique concepts, insights, strange new worlds. And barely manages to scrap more than the surface each time, because of the limited runtime.
That being said: I never imagined Saru to be coming from a totally pre-technology world. I always thought of him coming from, like, a post-apocalyptic Hunger Game's world. Because I find it hard to believe that he can become second officer to Georgiou, when she was already a Leutnant, and he didn't even new basic math.
Also: FUCK CBS. For not even HINTING at when they will be legally available outside North America!
Apart from that: Yeah, great short! I loved it! I just wish... it would have been more.