Categorizing all human activity, a sectoral approach

What is the best way to categorize all human activity on this planet? Or as much as possible within feasible limits. That’s a much debated issue within specialized circles. Splitting it by production, consumption, stock indices, border customs, or some other method all seem to have various pros and cons. e.g. UN ISIC Rev.5 versus Continue reading Categorizing all human activity, a sectoral…