Water wheels are also driven by rainwater, via the solar evaporation-condensation water cycle ; thus ultimately, industrial cloth-making was driven by the day-night cycle of solar irradiation. This is a holistic view of energy sources as a system-in-the-large. Thus, discussions of energy quality can sometimes be found in the Humanities, such as dialectics, Marxism and postmodernism. This is effectively because disciplines such as economics failed to recognize the thermodynamic inputs into the economy (now recognized as thermoeconomics), while disciplines such as physics and engineering were unable to address either the economic impacts of human activity, or the impacts of thermodynamic flows in biological ecosystems. Thus, the broad-stroke, global system-in-the-large discussions were taken up by those best trained for the nebulous, non-specific reasoning that such complex systems require. The resulting mismatch of vocabulary and outlook across disciplines can lead to considerable contention.