Chapter: Energy 5.10
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In battle, there are not more than two methods of attack–the direct and the indirect; yet these two in combination give rise to an endless series of maneuvers.

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Direct and indirect are two methods that can be used in many confusing combinations, for example with a sequence of indirect feints that move troops followed direct attacks into the holes created.

Likewise any two things can combine in many ways, just like the 1101100101 of computer binary.

To succeed in business you do not need to always invent new ways of competing. New ways of combining existing methods can be just as successful.