I was born in the 60s and I hold with the people who think we've been in relative stagnation, despite sometimes getting that living-in-the-future feeling. The 80s and 90s felt like progress was picking up after the 70s malaise, but not like the decades around 1900 as I've read about them. Since 2000ish it's like we went down the wrong trouser-leg of time.
