>"Probably never will happen in social science, and in much of medicine. Too many confounding variables." This is some kind of talking point. I'm not sure who

>"Probably never will happen in social science, and in much of medicine. Too many confounding variables." This is some kind of talking point. I'm not sure who is behind it, but it is totally false. There are tons of examples of this, especially from the pre-NHST era: https://en.wikipedia.org/wiki/Kleiber%27s_law https://en.wikipedia.org/wiki/Kleiber%27s_law https://en.wikipedia.org/wiki/Law_of_mass_action https://en.wikipedia.org/wiki/Law_of_mass_action http://www.ncbi.nlm.nih.gov/pubmed/17845298 http://www.ncbi.nlm.nih.gov/pubmed/17845298 https://en.wikipedia.org/wiki/Law_of_effect https://en.wikipedia.org/wiki/Law_of_effect http://www.tandfonline.com/doi/pdf/10.1080/00221309.1934.9917847 http://www.tandfonline.com/doi/pdf/10.1080/00221309.1934.991... https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2916857/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2916857/ https://en.wikipedia.org/wiki/Compartmental_models_in_epidemiology https://en.wikipedia.org/wiki/Compartmental_models_in_epidem... http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2007940/pdf/brjcancer00386-0010.pdf http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2007940/pdf/brjc... https://en.wikipedia.org/wiki/Cardiac_output https://en.wikipedia.org/wiki/Cardiac_output