Warren Buffett, the so-called Oracle of Omaha, is stepping away from leading Berkshire Hathaway (NYSE: BRK.B ) ( BRK.A ). The famed investor is one of the best in the business, but time catches up withMarkets rise and fall, booms come and go, and the world keeps ticking. Ultimately, I believe observing megatrends, as difficult as they can be to spot, let alone fully comprehend, can yield insights into the advance of human society, which in turn could pave the way for many useful investment insights. As soci ...