Excellent vid, lovely photography. I’m inclined to think that energy is the thing that made everything. Or maybe the synergy between machines and energy exploitation, such as the boring machines which made cylinders for steam engines, which pumped the coal mines, which powered the factories, which made the boring machines, which made the steam-powered bellows, which pumped the blast furnaces, which made the steel, which made the … etc.
Or maybe it was the realisation that animals were just one type of energy consuming machine. Count Rumford’s 1798 experiment showed that two horses turning a cannon boring lathe generated as much frictional heat as if you’d burned the oats that you fed to the horses. In one fell swoop he overturned the caloric theory of heat, anticipated 19th century thermodynamics, and got a nice shiny cannon barrel to boot.