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First Principles
First principles thinking is widely adopted by philosophers and scientists. A great investor should be as truth-seeking as a great philosopher or scientist, because intellectual honesty is of utmost importance in investment decision making.
Applied to research and analysis, first principles thinking requires an investor to decompose business models into their fundamental drivers and dynamics — the thinking process that answers the fundamental “why’s” of a business. Only then is the investor in a position to weigh the many other factors — the “what’s” — that drive an investment decision. It is a simple yet powerful concept.