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The Diagrams Book by Kevin Duncan

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6  THE INTERLOCKING WEDGE

• The Interlocking Wedge allows two diametrically opposed approaches to be compared logically.

• The two extremes are placed to the far right and left, approaches A and B. At each extreme the approach taken would be 100% A or B.

• A manageable number of interlocking criteria are then chosen, in this case three: high (100% one approach), medium (60% one, 40% the other) and low (80:20).

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• By merging these criteria from left to right and vice versa, the diagram generates a series of possible permutations for resolving the issue.

• In this example there are six permutations, and each can then be analyzed for suitability. ...

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