One of the core concepts that we have discussed is the role of technology in human progress. We invent and discover — through directed search but very frequently accidentally — ways to getting things done more efficiently. As more people spend more time figuring out cheaper processes of producing stuff, and also producing new sorts of stuff, we end up with the modern world.
This is just one of those random videos on YouTube which illustrate the point above. I’m not sure if it will play for you, though. It could be behind a pay wall. If it is, let me know in the comments and I will figure out a way for you to watch it.