Principle 9: Preliminary Anti-Action

According to the principle, preliminary anti-action description is;

1. 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.
2. Create beforehand stresses in an object that will oppose known undesirable working stresses later on.

Based on your, understanding, can you give a unique everyday life examples or objects that suit the principle?

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