what is robot density?

The indicator exists to correct the size trap: comparing China's total robots with Belgium's says nothing, because China dominates every volume ranking. Dividing by industrial employees makes comparison possible: South Korea has led the world for years with the planet's most automated industry per worker (driven by electronics and automotive), followed by Singapore and, within Europe, Germany. China has made the fastest climb in the indicator's history: in a decade it went from cheap-labor country to among the world's most automated by density too.

For this house's reader, density is the number that turns how many robots exist and which country has the most into a useful question: not how many machines there are, but how much human work they accompany. When a headline says "the robots are coming for the jobs," density is the figure that lets you check how fast they are actually coming, country by country.