Most cities and nations are trying to fix 21st century problems with 20th century technology. (forest-trends.org)
The whole paradigm where everyone fears interest rates going up wildly, because inflation is going up wildly and will become out of control; was very much only a 20th century problem. (toolsformoney.com)
More importantly, it could prevent us being locked into 20th century technologies that are quite incapable of solving 21st century problems. (newscientist.com)