How can an investor monitor political developments, listen to business news, analyze company data and try to follow it all closely enough to make sensible investment decisions? If attuned to every piece of information and detail of macroeconomic and microeconomic news, an investor would analyze his or herself into hyper-sensitivity and portfolio destruction or decision-making paralysis. The "noise" could be deafening and the useful "signals" lost in a cacophony of chaos.
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