>Initially, he means that a single self-sufficient person contributes 0 to the GDP There is probably an argument that for accounting purposes a person should b

>Initially, he means that a single self-sufficient person contributes 0 to the GDP There is probably an argument that for accounting purposes a person should bill themselves at market costs for self-work. E.g. mowing the lawn, changing one's own oil, doing one's taxes -- all are economic activities with a value associated which is 'lost' in a traditional GDP calculation.