One of the lessons I've learned is that things don't really change very much. Obviously the internet has changed how we do things, but not by much: A time trave

One of the lessons I've learned is that things don't really change very much. Obviously the internet has changed how we do things, but not by much: A time traveler snatched from 1975 would feel right at home in most ways that matter. When I was younger, I expected change to happen much faster. Hovercars and jetpacks, but also World Government, peace on Earth, and food for the hungry. We haven't really made much progress. I have high hopes for new players in the transportation and space industries, and for medical advances based on genetics and bioinformatics, but experience tells me not to hold my breath. But there are also surprises the other way. In 1975, no one believed the U.S. would have a non-white president so soon. I now live in a state of (very) tempered optimism.