Theory of Inventive Problem Solving (triz)

Table 3. The 40 Inventive Principles

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Table 3. The 40 Inventive Principles.

1. Segmentation

a. Divide an object into independent parts

b. Make an object sectional

c. Increase the degree of an object's segmentation


2. Extraction

a. Extract (remove or separate) a "disturbing" part or property from an object, or

b. Extract only the necessary part or property


  • To frighten birds away from the airport, use a tape recorder to reproduce the sound known to excite birds. (The sound is thus separated from the birds.)

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