If "support" means statistics, then no, there is no valid support. All I can offer is logic. For example: https://en.wikipedia.org/wiki/Marginal_revenue_product

If "support" means statistics, then no, there is no valid support. All I can offer is logic. For example: https://en.wikipedia.org/wiki/Marginal_revenue_productivity_theory_of_wages https://en.wikipedia.org/wiki/Marginal_revenue_productivity_... Is this (https://saylordotorg.github.io/text_principles-of-economics-v2.0/section_15/26d7e8656909aa42ed7569015c10bd2e.jpg https://saylordotorg.github.io/text_principles-of-economics-...) hard to understand? Or maybe you want something more rigorous: https://mises.org/library/theory-idle-resources-0 https://mises.org/library/theory-idle-resources-0