The US led in 60 of 64 critical technologies in 2007, now China leads in 57 and the US leads in 7–a stunning shift of leadership from the US to China:

Safety technology

This is how scaffolding used to be erected: can we still work under these conditions today? In the past, scaffolding was erected using methods that seem unthinkable to us today, but perhaps even today there are those who face the same risks. It is a question of mentality, risk perception and awareness of one's own safety. Although this awareness has increased over time, there are still employers who demand to work in conditions similar to those of a century ago, and workers who are willing to accept them. A profound cultural change is needed to always put safety first.

The Pyramid of Egypt