Inventive principles eliminating technical contradictions

Studying inventions led Altshuller to two interesting observations. First, the same contradictions could be found in many inventive problems and in various areas of engineering that is, they were universal, not domain specific. Second, inventors, in no matter what domain, were using the same ways to eliminate the same technical contradictions. These two observations combined led Altshuller to the conclusion that both contradictions and the heuristics for their elimination (called later Inventive Principles ) are entirely domain independent. Next, he had a dream If we knew all Inventive Principles, then the life of inventors would be so much easier. He was a man of action and made finding inventive principles one of his top research priorities. Soon, after only several years, he had a collection of 40 inventive principles, which can be described as a group thus  

Principle of extraction (how to remove an undesired feature or part of an object) 

Principle of local quality (how to create the desired quality only locally) 

We will analyze briefly only the first (and one of the most often used) principle, the principle of segmentation. In fact, this principle can be understood in three different ways as 

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Inventive principles for technical contradiction elimination are used to eliminate problems represented in terms of technical contradictions. Inventive principles describe either solution pattern which can be applied to resolve the contradiction or a direction in which a problem has to be solved. There are 40 inventive principles for resolving technical contradictions available in TRIZ... 

Inventive Principles is a collection of 40 heuristics that are necessary and sufficient to eliminate all possible technical contradictions in inventive conceptual designing. 

For any technical contradiction, identified by two conflicting characteristics of an engineering system, the table provides numbers of all inventive principles that could be potentially used to eliminate this contradiction. 

Each technical contradiction may be eliminated using at least one inventive principle. 

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