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40 Inventive Principles
Converting Harm into Benefit

a) Utilize harmful factors or environmental effects to obtain a positive effect.

b) Remove a harmful factor by combining it with another harmful factor.

c) Amplify a harmful action to such a degree that it is no longer harmful.
 

EXAMPLE:
  1. Acidic and alkaline waste products from the chemical industry neutralize each other by simply being combined.
  2. Use liquid nitrogen on frozen gravel or sand (over-freezing) to restore the material’s ability to be spread.