Dear steam engine, you know what's crazy? You've never really been improved upon. Like this thing, which facilitates time travel, probably runs on a steam engine. Almost all electricity around the world, whether it's from coal or nuclear power, is just a steam engine. It's all still just water and heat, and it speaks to how truly revolutionary the Industrial Revolution was that since then, it's really just been evolution. Best wishes, John Green. So you may have heard any of those rationales for European industrialization, or you may have heard others.