The tube is great (less so when they're striking or there's snow or it's rush hour). But London is a singularly great place for tube tunnels and other mass tra

The tube is great (less so when they're striking or there's snow or it's rush hour). But London is a singularly great place for tube tunnels and other mass transit: - birthplace of the industrial revolution - had a ton of infrastructure development during the 1800s when safety was no concern and development could be done cheap and fast - high density - lots of engineers and other skilled people to make it work - tons, tons of money and support from a big government in a high-tax society - focal point of a global empire for a long time, which fed all the above even more - a nice layer of softer rock underneath the city perfect for tunnelling We should build mass transit in places like this where it makes sense. But for 99% of the rest of Earth's populated surface, it won't.