The hint that productivity is perceived (subjective, qualitative), but not measured (quantitative), is good. Productivity is argued, in the end, not demonstrat

The hint that productivity is perceived (subjective, qualitative), but not measured (quantitative), is good. Productivity is argued, in the end, not demonstrated; or only within a very specific, limited framework (a very productive endeavour locally may reveal to be counter-productive on a higher or later scale). For instance, heavily relying on fossile fuel while pushing CO2 in the atmosphere has proved very successful in a specific time frame, the past century, let's say. But if (if) that means that Earth becomes inhabitable by current life forms within the next century, from an external observer, it was rather an error, or mismanaged, so not so productive.