Academia needs an atmosphere of open contention among many schools.
Tips
history
Refers to the Warring States intellectual flowering (5th-3rd c. BCE) when Confucianism, Daoism, Mohism, Legalism and others debated openly. 《汉书·艺文志》 lists 189 schools. 百家 ('hundred schools') is hyperbolic — it simply means 'many'.
culture
Revived politically in Mao's 1956 slogan '百花齐放,百家争鸣' ('let a hundred flowers bloom, let a hundred schools contend'), though the later Anti-Rightist Campaign belied the invitation.