"Typically, the person is asking question (s) because they’ve latched on to a sound bite-style piece of investing wisdom (e.g., stock picking is bad, market timing is bad, passive investing is better than active investing, your bond allocation should be equal to your age, etc.) and they’re trying to figure out how to apply it.
Sound bites are helpful when you’re first getting started investing, because they allow you to put a decent plan into place without being completely overwhelmed with information. But as you might imagine, they tend to be oversimplifications. And, eventually, rather than trying to base every decision on such simplified advice, you’re better off taking the time to understand the reasoning behind the sound bite, so you can make critical decisions on your OWN.
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http://www.obliviousinvestor.com/amen....tb