Feynman mentions the Rhine example in his cargo cult science lecture (http://www.lockhaven.edu/~dsimanek/cargocul.htm http://www.lockhaven.edu/~dsimanek/cargocu

Feynman mentions the Rhine example in his cargo cult science lecture (http://www.lockhaven.edu/~dsimanek/cargocul.htm http://www.lockhaven.edu/~dsimanek/cargocul.htm) I think an even more interesting example, one that shows greater subtlety of these effects, is the trend in experimental measurements taken when performing the Millikan Oil drop experiment (https://en.wikipedia.org/wiki/Oil_drop_experiment https://en.wikipedia.org/wiki/Oil_drop_experiment). This is also mentioned in Feynman's lecture. I had a plot I can't find now of the historical measures. It quite funny how the measurements trend slowly from Millikan's value to the true one over time.