we could demonstrate the impression of adding extra of the variable resource, say labor, to a set volume of cash and find out what transpires to output. For demonstration needs in economics, we frequently make widgets, https://www.youtube.com/watch?v=-nQTR6bXhfU&list=PLZ3DkIWtVYetfvXsAvY04--yisQJg2WWI&index=9&pp=iAQB
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