Investors should be skeptical of history-based models. Constructed by a nerdy-sounding priesthood using esoteric terms such as beta, gamma, sigma and the like, these models tend to look impressive. Too often, though, investors forget to examine the assumptions behind the models. Beware of geeks bearing formulas.
Warren BuffettAnything can happen anytime in markets. And no advisor, economist, or TV commentator-and definitely not Charlie nor I-can tell you when chaos will occur. Market forecasters will fill your ear but will never fill your wallet.
Warren Buffett