TRIZ For Dummies

Appendix C

The 39 Parameters of the Contradiction Matrix

The Contradiction Matrix and the 40 Inventive Principles are helpful for solving contradictions. The Matrix consists of 39 improving and worsening parameters.

The following definitions are based on the TRIZ Journal (21 November 1998’s entry; see www.triz-journal.com) by Ellen Domb, from translations of Altshuller’s work:

• Moving object: Objects that can easily change position in space, either on their own, or as a result of external forces. Examples are vehicles, objects designed to be portable and objects which are used while in motion.
• Stationary object: Objects that do not change position in space, either on their own or as a result of external forces.

If you’re not sure whether your system is movable or stationary (for example, a wind turbine), consider whether the part of the problem you are looking at is moving while it is in use. If, for example, you are looking at the wind turbine as a whole, it is stationary; if you are interested in a problem with the blades, they are moving. If you’re not sure, try both!

Number	Title	Explanation
1	Weight of moving object	The mass of the object, in a gravitational field. The force that the body exerts on its support or suspension.
2	Weight of stationary object	The mass of the object, in a gravitational field. The force that the body exerts on its support or suspension, or on the surface on which it rests.
3	Length of moving object	Any one linear dimension, not necessarily ...