How to Get More Efficient on the Farm

Nailed horseshoes. Can you imagine that there weren't nailed horseshoes by it before 8 or 900? Absolutely true. We have a better use of more efficient water wheels, windmills, sawmills. This all has to be seen as technology. But the wheel whenever somebody invented the wheel back in caveman times was a huge innovation. Without a commercial revolution, you couldn't have an agricultural revolution.