LeGuin's novel about dreams, utopia, & Portland. Perhaps the most Portland book by her that I've read. Likens projects remaking the world to controlling a person's dreams. Not sure if the 70s-style depiction of what a 7 billion population world would look like is another example of the 70s sci-fi overpopulation hobbyhorse, or is meant to lampoon it. Either way, Lathe of Heaven seems to deal with the population issue in a much more mature way than the likes of Harry Harrison or Larry Niven. I liked the depictions of the different versions of Portland, even though they date from well before the Portland that I came to know existed. Perhaps the Portland of today or the one that I knew in the early 2000s are from Orr's dreams.