Core Viewpoint - The article discusses three types of contrarian investors and their approaches to investing during market bubbles, emphasizing that participating in bubbles can sometimes be a rational choice despite the inherent risks involved [4][10]. Group 1: Types of Contrarian Investors - Aggressive contrarian investors directly oppose the market by short-selling bubbles, which is a challenging strategy due to the psychological and financial pressures involved [12][17]. - Lonely contrarian investors maintain cash positions or minimal investments, facing social isolation and pressure from prevailing market sentiments, which can lead to a "spiral of silence" where they refrain from expressing their views [18][21]. - Active contrarian investors, like deep value investors, continue to invest in undervalued stocks during bubbles, often referred to as "old economy stocks," which can lead to criticism for not participating in the prevailing market trends [24][25]. Group 2: Psychological Aspects - The phenomenon of "fear of missing out" (FOMO) drives many investors to participate in bubbles, as investment returns are often tied to social status [7][10]. - The "martyr complex" can lead contrarian investors to view themselves as lone heroes fighting against the bubble, which may disconnect them from reality and hinder their decision-making [34][36]. - The article highlights the importance of maintaining an open mindset and engaging with others to alleviate the pressures faced by contrarian investors [36].