And when it comes to actual material productive industries, I always say we have two: killing people and burning oil.

Automobiles? Burning oil

Aviation? Mostly military planes, so both

Polymers and petrochemicals? Burning oil

Weapons manufacturing? Killing people

Construction? Ultimately, since the roads and bridges are all car-focused, burning oil.

Steel? Seems good at first, but it’s ultimately going to be turned into a car (burning oil) or a weapon (killing people).

The cherry on top is that, because of climate change, all of the “burning oil” bits are also secretly killing people.