we could show the affect of adding much more of a variable source, say labor, to a hard and fast level of money and find out what happens to output. For demonstration reasons in economics, we frequently make widgets, https://www.youtube.com/watch?v=-nQTR6bXhfU&list=PLZ3DkIWtVYetfvXsAvY04--yisQJg2WWI&index=9&pp=iAQB