And it's good reason for them to be obsessed with the idea of universals, because all of science, through the 19th century and much of the 20th, was obsessed with universals.
Y hay una buena razón para que ellos se obsesionasen con los principios universales, porque toda la ciencia, a lo largo del siglo 19 y gran parte del 20, estaba obsesionada con principios universales.