A very good book, which is in some sense a different take on Tyler Cowen’s Great Stagnation theory. Gordon’s book is much longer and quite extensive in detailing why, in his view, growth was abnormally high during the middle 20th century and part of the early 21st century, but has otherwise been disappointing. Somewhat depressing, but very enlightening. If it’s not something you’re interested in, you’ll find it painfully tedious, but if it’s a topic you’re curious about, it’s fantastic.