Acharya Prashant explains that economic recessions, such as the 2001 dot-com bubble and the 2008 housing crisis, are fundamentally caused by human ignorance and greed. He points out that during the dot-com bubble, people invested heavily in companies with no products or profits simply because everyone else was doing so. This lack of inquiry and the tendency to follow the crowd led to sky-high valuations that were not backed by fundamentals. He argues that this behavior mirrors how common people live their daily lives—following others without questioning the purpose of their actions or the value of their pursuits.