Acharya Prashant discusses the established fact that IQ levels have been consistently dropping over the last few decades. He attributes this decline to the easy availability of mediocre information and the prevalence of one-way media, such as radio and television, which encourage passive consumption. He explains that while radio neutralized hearing and television neutralized both sight and hearing, the internet and social media have furthered this trend by requiring zero mental exercise or discretion. This passive consumption leads to a dulled mind that lacks the ability to interact, object, or investigate the content it receives.