In the U.S. stock investment world, if we are to talk about the "most enduring" investment portfolio strategy designed to weather all economic cycles (boom, recession, inflation, deflation), the most representative one is undoubtedly "The Permanent Portfolio." This strategy was proposed by the late investment master Harry Browne in the 1980s. Its core philosophy is quite unique: acknowledging that no one can predict the future, it does not attempt to "time the market" but instead ensures resilience under any economic conditions through extreme diversification...