I’d been vaguely meaning to read L. Sprague de Camp’s Lest Darkness Fall for a while, and Jo Walton’s post about it on Tor.com brought it back to mind. It’s a very short book and seemed like moderately light reading.
My opinion of it is much closer to Chad’s than Jo’s: some good bits, but too much of its time for me to really get into. As Chad notes, the characterization is thin at best (particularly, I think, of the women); I also had the sense that the political plot would have worked much better if I knew more history. And a really egregious bit of Eurocentrism at the end left a bad taste in my mouth.
I do like the technical, rather than political, aspects of the book (minor spoiler, ROT13: V jnf fhecevfrq naq cyrnfrq gung ur qvqa’g trg thacbjqre jbexvat), in the same way that I liked the nonfiction Engineering in the Ancient World. If that’s your kind of thing, you might just stick to the first half of the book, which I probably should have done.