He's right more often than he's wrong but less often than he's used to, at least in part because he's learning so much from the low-confidence guesses. There are occupations here he's never heard of! It's pretty exciting. 

For example, that man is a pilot! He ushers them up the building toward their sailer and has them strap into seats and, when Miriqua murmurs to him, provides paper bags that can be tied over their faces to prevent vomit from escaping into the cabin if they have trouble with the low gravity.

Neither of them turn out to have trouble with the low gravity! They just grin at each other a lot and crane their necks around to admire the view and generally push the boundaries of British dignity.

And over the course of the next couple of hours they approach New Riverround, which is indeed possessed of small rivers on its surface. The sail is tied on at the top of a New Riverround docking tower, and they and all the other passengers can disembark and step into the city.

"I've been wondering," Watson says to Miriqua, "Do people here ever decide they want systematic education on some subject they were not created already knowing? If so, how do they obtain it?"

"That happens sometimes. They look for someone to tutor them - or if they can get permission they can make someone to tutor them; you don't need to have all the skills of someone you create."

"A rather roundabout way of doing it, but I can see the logic. Once we have obtained some sort of lodging and my grasp of the language has improved I should like to look for a tutor in medicine."

"That sounds like a good plan," says Miriqua. "I'm not sure where it will be best for you to stay while you look for an available house. There are inns for people who are on the round for business, but they aren't meant for long visits; you might do better to take a room in your tutor's house as soon as you find one - and you?" she asks Sherlock. "Do you have a plan?"

"I intend to hang out my shingle as a consulting detective, but even when I had an international reputation cases were not sufficient to occupy all of my time. I was in the middle of writing a monograph on the analysis of footprints before I arrived here; I intend to finish it. In the long term, some combination of investigating any strange occurrences people care to bring me, and continuing my research."

"...the analysis of footprints?" says Miriqua.

"Indeed! A great deal of information can be acquired from footprints, both about the person who left them and about the conditions in which the footprint was made. I will want to adapt it to the different types of shoe and terrain found around here, of course."

"I suppose maybe there is a library that would like to carry such a work," she says dubiously.

"In the past my readership has generally been restricted to the police and to those with a theoretical interest in criminal investigation", Holmes says unconcernedly. "Though Watson tells me that occasionally my work finds its way into medical circles."

"Your work on footprints?"

"No, no, my previous work has included such subjects as determining the time and cause of death from examining a corpse."

"Is that frequently useful?"

"Unfortunately, yes."

"I'm sorry to hear that."

"An occupational hazard of dealing with things outside the ordinary is dealing with people and acts outside the ordinary bounds of law and decency. As compensation, I can often ensure that justice is done afterward."

"We don't have much of this sort of problem on civilized rounds," says Miriqua.

"I am glad to hear it. Perhaps I will spend my days in chemical researches, and those interesting cases in which a mystery presents itself but no crime was committed."

"Perhaps. I hope you will be able to find some way to make yourself useful."

"Yes, we shall see where my efforts prove most valuable."

The sail ride is pretty nauseating; not only is there no gravity, they swoop around, sometimes with sudden shifts of momentum. Miriqua returns to teaching them the local predominant language, which is called Sirigan.

This is not very much like being on an ocean-going ship! They will hold onto their seats and focus on grammar.