List three of the "supersectors" that make up the American economy today. Are there any supersectors that do not involve knowledge or service work?

The American economy, like many advanced economies, is often categorized into broad segments known as "supersectors" to help in analysis and reporting of economic activities. Three of the supersectors that make up the American economy today are:

1. **Service Sector**: This is the largest supersector and includes a wide range of industries such as healthcare, education, finance, real estate, retail, and hospitality. It is characterized by the provision of services rather than the production of goods.

2. **Industrial Sector**: Also known as the secondary sector, this includes manufacturing, construction, and utilities. It involves the transformation of raw materials into finished products and the construction of infrastructure.

3. **Agriculture, Forestry, Fishing, and Hunting Sector**: This primary sector involves the extraction and production of raw materials from the natural environment, such as crops, timber, and seafood.

Regarding the second part of your question, the supersectors that are less reliant on knowledge or service work would be the primary sectors like agriculture, forestry, fishing, and hunting, as well as parts of the industrial sector, such as manufacturing. While these sectors do require knowledge and expertise, they are more heavily based on physical labor and the production of tangible goods rather than service or knowledge work. However, it's important to note that even these sectors are increasingly incorporating knowledge-based activities due to technological advancements and the need for specialized skills in areas such as precision agriculture, industrial automation, and sustainable resource management.