Innovation, industrial revolution, fossil fuel, market economy and tomorrow less labor and energy intensity.

 Labour intensity and energy intensity in production.

Circa 1900, around 1500€

2022, 72,90 €

Do you understand Einstein's general relativity? This could help

 https://arxiv.org/pdf/1704.02058

Einstein ring

https://www.youtube.com/watch?v=MTY1Kje0yLg

and the second part

https://arxiv.org/pdf/1707.03728