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There’s an old investment saying that you should buy what you know. If we did that, it surely would limit the number of companies in which we invest. Maybe that wouldn’t be such a bad thing, but perhaps a better strategy would be to buy things you understand. That would open the gates to a number of companies, particularly if you understand the tailwinds that may be driving the business.
A case in point occurred last week when Twitter (TWTR) took the wraps off Periscope, its new live streaming service that looks to do for video what “selfies” did for camera more»