A fast, fun, rewarding read.

This kept me reading from the first page to the last. What's happening isn't at all a puzzle, unlike some other books that use the same general concept (some of which I now want to go back and re-read). The way the high-tech protagonist's depression was dealt with was fascinating to me, and not one I've seen before; and having clinical depression myself, I found it plausible and relatable. And the relationship(s) between the high-tech protagonist and the indigenes who see him as a wizard were done well, feeling genuine on both sides.

Very recommended!