On why we should study the minute changes of papillary ridges to learn about human development, according to Francis Galton:
We know nothing by observation about the persistence of any internal character, because it is not feasible to dissect a man in his boyhood, and a second or third time in his later life. ("Discontinuity in Evolution" 366)
*I almost titled this post "Something Something Something NAZIS!" Then I remembered how tedious debates about Darwinism/Eugenics/National Socialism tend to be and thought better of it.