I mean subways were not any easier to build 100 or 50 years ago than today. And it surely was not cheaper. They were much cheaper: http://slatestarcodex.com/20

I mean subways were not any easier to build 100 or 50 years ago than today. And it surely was not cheaper. They were much cheaper: http://slatestarcodex.com/2017/02/09/considerations-on-cost-disease/ http://slatestarcodex.com/2017/02/09/considerations-on-cost-...