Unlike Tim Lee, I haven't read Ben Clemens' book Math You Can't Use. Indeed, I just now heard of it for the first time. But good title! And it's a good subject for a book -- the case against software patents. This is not an issue that's on most people's radar screens, but the growth of software patents is a wholly unjustified trend that threatens to put a perpetual drag on the global economy. Maybe I'll buy the book.