In which two men, Powell and Donovan, get shipped off to Mercury with their robot Speedy to re-start some mining expedition up there, and the problems that occur.
We only got a little bit of mention of the Rules of Robotics in the previous story, mostly the First Rule, against robots hurting humans. This story really drags those rules into the spotlight though, as not only are they handily infodumped on us (well, but it's done in a pretty non-clumsy way at least), but they also come heavily into the solution of the problem. And it's pretty well-done really. Of course, I thought the solution was a bit obvious, but I HAVE read the stories before even though it's been a while, so I might have just been remembering that much.
Again it's jarring reading it from our own perspective - this is our very near future, and there are odd mix-ups, such as manned long-term missions on other planets, and humanly intelligent (or nearso) robots being commonplace and *old*, yet they still have communication problems (although I guess maaaybe there could be real sciency reasons for it, it just seems a lot more handwavy to our own culture than I suspect Asimov intended).
I also wish we had a bit more info on the actual problem! That's one of the main flaws with the story for me - I realize this is supposed to be all science fiction, and a lot of it not quite nailed down, but it's a lot harder to feel a sense of urgency for getting the selenium when the consequences for not getting it aren't really spelled out - we just know that they need it for some such-and-such cells. Gah, the whole "we can't really wait! We need that selenium!" bits were really annoying, because I wanted to know "well, WHY?"
The other flaw for me was that the characters are again a bit one-or-two-note. Which at least makes the Harridan stereotyping of the first hausfrau a little less grating, since other characters are fairly stereotypical too - we have Powell, the Calm Collected Smart guy, and Donovan, the more brash and not as bright second. That's... pretty much it, although Donovan at least does come up with some good ideas.
It is interesting also though to see Asimov exploring some of the consequences of human-like robots, and humanity's reaction to them, such as the whole shift to a "slave mentality" for a while. That at least makes the world seem a bit more fleshed out, although I still can't quite get past the problems of culture shock and somewhat flat characterization to really get immersed in it.
As requested, here's a reminder link of the book schedule.