Principle 22. "Blessing in disguise" or "Turn Lemons into Lemonade"

1. Use harmful factors (particularly, harmful effects of the environment or surroundings) to achieve a positive effect.
   Use waste heat to generate electric power.
   Recycle waste (scrap) material from one process as raw materials for another.
2. Eliminate the primary harmful action by adding it to another harmful action to resolve the problem.
   Add a buffering material to a corrosive solution.
   Use a helium-oxygen mix for diving, to eliminate both nitrogen narcosis and oxygen poisoning from air and other nitrox mixes.
   Amplify a harmful factor to such a degree that it is no longer harmful.
   Use a backfire to eliminate the fuel from a forest fire.