Silhak was a Korean Confucian social reform movement in the late Joseon Dynasty. Sil means "actual" or "practical", and hak means "studies" or "learning". It developed in response to the increasingly metaphysical nature of Neo-Confucianism (성리학) that seemed disconnected from the rapid agricultural, industrial, and political changes occurring in Korea between the late 17th and early 19th centuries. Silhak was designed to counter the "uncritical" following of Confucian teachings and the strict adherence to "formalism" and "ritual" by neo-Confucians. Most of the Silhak scholars were from factions excluded from power and other disaffected scholars calling for reform. They advocated an empirical Confucianism deeply concerned with human society at the practical level.