Principle 9: Preliminary Anti-Action

According to the principle, preliminary anti-action description is; If it will be necessary to do an action with both harmful and useful effects, this action should be replaced with anti-actions to control harmful effects. Create beforehand stresses in an object that will oppose known undesirable working stresses later on. Based on your, understanding, can you

What is the most interesting principle in TRIZ 40 Principle?

There are about 40 principles that are used all around us which people use to create new inventions. What is the most interesting 40 Principles to you and why?