Summary
David Shapiro lays out an economic framework for understanding what automation could mean for the economy. He starts with the Fisher-Clark model, developed by Allan Fisher in 1935 and Colin Clark soon after, which divides the economy into primary (extraction), secondary (transformation), and tertiary (services) sectors based on how value is created rather than on jobs.
Using historical estimates for England in 1381 and 1851 and the modern United States, where extraction is about 1% of the economy and services about 80%, Shapiro shows how sector shares shift without sectors disappearing. He then explains why earlier proposals for a fourth and fifth sector, such as knowledge work, executives, or the attention and experience economies, were category errors because they still sort by jobs and still assume human labor.
His central argument is that the textbook production function, which sets output to zero when labor is zero, rests on an assumption that is about to break. The real fourth sector, he says, is value created with negligible human input, and the video explores what that could mean for everyone.
📺 Source: David Shapiro · Published November 01, 2026
🏷️ Format: Opinion Editorial
